Scott Arboretum & Gardens https://www.scottarboretum.org/ Thu, 01 Oct 2026 20:55:43 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.10 https://www.scottarboretum.org/wp-content/uploads/2024/11/cropped-SGA-FINAL-1C-3500-1-32x32.png Scott Arboretum & Gardens https://www.scottarboretum.org/ 32 32 Plants of the Week: October 1 https://www.scottarboretum.org/plants-of-the-week-october-1/ https://www.scottarboretum.org/plants-of-the-week-october-1/#respond Thu, 01 Oct 2026 21:09:00 +0000 https://www.scottarboretum.org/?p=24723 Plants of the Week by Caelon Shugrue, Public Horticulture Intern Cornus florida forma rubra – pink-flowering dogwood It is fall in Pennsylvania, which means our deciduous trees and shrubs are […]

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Cornus leaves turn red, purple, and dark greens, backed by the curling Cornus branches.
Photo credit: C. Shugrue

Plants of the Week by Caelon Shugrue, Public Horticulture Intern

Cornus florida forma rubra – pink-flowering dogwood

It is fall in Pennsylvania, which means our deciduous trees and shrubs are beginning to change colors to display their wonderful autumn splendor. Chlorophyll pigments make plant leaves green by reflecting green light during photosynthesis. However, as fall approaches, days get shorter and colder, causing trees to reduce photosynthetic rates and prepare for winter dormancy. The chlorophyll breaks down, and other pigments previously masked by chlorophyll get their brief moment to shine. 

Plants, like this pink-flowering dogwood, express red leaves due to an additional pigment called anthocyanin. This pigment protects the photosynthesizing chloroplasts by absorbing high-energy light photons that would otherwise damage the cells. Leaves in direct sunlight often produce more anthocyanin compared to shaded leaves, making sunny leaves more red in color.

This dogwood, found on the Science Center lawn, has begun senescing, and the leaves display a beautiful array of green, red, and purple. In addition to the beautiful leaves, the form of this dogwood is captivating – its graceful branches stretching into an expansive canopy. Now, if you look closely enough, you can see the quaint, little flower buds for next year at the tips of many branches. 

Double-podded fruits droop from the yellowing fall Halesia branches.
Photo credit: C. Shugrue

Halesia diptera Magniflora Group – two-winged silverbell

This silverbell has beautiful, yellow leaves during autumn due to the carotenoids remaining in the leaf. Among carotenoids, some pigments photosynthesize (xanthophylls) and others do not (carotenes). Although carotenes do not photosynthesize, they protect the leaf cells from damaging excess light. These pigments, that have been working behind the scenes with chlorophyll, now get their spot in the limelight. 

In addition to the two-winged silverbell’s yellow leaves, its fall interest comes with winged fruits. The other species in this genus, Halesia carolina (Carolina silverbell) has a fruit with four wings. These fruits start light yellow and turn a darker tan color over the course of the fall season. The long draping branches characteristic of silverbell trees allow passersby to easily spot these fruits. This silverbell is found in the West Circle beside Parrish Hall, where it thrives in dappled shade as an understory tree.

Urchin-like, pink Illicium flowers in bloom
Photo credit: C. Shugrue

Illicium ‘Woodland Ruby’ – hybrid anise-tree

This evergreen shrub is not like the two previously mentioned plants; its leaves stay green year round. While the color may not speak to a northeastern autumn, Illicium ‘Woodland Ruby’ leaves have their own hidden talent. When crushed, they emit an aromatic smell of anise or licorice. Although safe in a tangible, crushed capacity, avoid ingesting the poisonous leaves. Only one species in the Ilicium genus (Illicium verum, known as Chinese star anise) has edible berries used in teas, spices, and essential oils.

While its leaves are green and aromatic, its beautiful flowers are the real showstopper. This Ilicium is a cross between I. mexicana (native to Veracruz, Mexico) and I. floridanum (native to Florida), first introduced by Woodlanders nursery in South Carolina. This cross gives ‘Woodland Ruby’ the ability to bloom for longer and tolerate more sun compared to the straight species. This plant is found in the evergreen screening between the Sibbet Garden and the Amphitheater, where it enjoys shade and moist soils. Look for this plant as it continues to bloom throughout the fall with its stunning, deep red flowers.

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Plants of the Week: September 29 https://www.scottarboretum.org/plants-of-the-week-september-29-2/ https://www.scottarboretum.org/plants-of-the-week-september-29-2/#respond Tue, 29 Sep 2026 20:23:00 +0000 https://www.scottarboretum.org/?p=24718 Plants of the Week article written by Kaiden Lytle, education intern Hamamelis vernalis ‘Girard Purple’ – vernal witchhazel Walking up the hill between the Scott Arboretum offices and the McCabe […]

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Two Hamamelis branches feature flat, scalloped, alternate leaves.
Photo credit: K. Lytle

Plants of the Week article written by Kaiden Lytle, education intern

Hamamelis vernalis ‘Girard Purple’ – vernal witchhazel

Walking up the hill between the Scott Arboretum offices and the McCabe library, you might miss this small, unassuming shrub. A member of the Hamamelidaceae family, with ovate, scalloped leaves and a quirky winter-flowering habit, Hamamelis vernalis ‘Girard Purple’ isn’t your typical woody shrub. This is a vernal witchhazel. 

The parent species is native to the Ozark region of Missouri, Oklahoma, and Arkansas, where it grows along rocky slopes and streambeds. During the mid- to late-winter season, vernal witchhazel produces small, fragrant flowers ranging from copper to reddish-purple before new leaves emerge. The leaves hold off until the spring, where they burst forth in shades of bronze-green, darkening to forest green as the season continues. In autumn, the leaves turn a striking golden yellow, as if giving a small preview to the further winter color to come in the colder months. 

Though this shrub can be modest in appearance, it has striking moments throughout several seasons and adds a level of depth to the winter months of a year-round garden, when color is usually lacking. Used by gardeners for hedges, screens, and woodland gardens, this is truly a great, underutilized woody plant. 

A swath of bluish-limey green foliage.
Photo credit: K. Lytle

Baptisia australis – false indigo 

The next featured plant comes with a science lesson. As a small to medium height, bushy perennial, false indigo (Baptisia australis) is another interesting, though unassuming, plant. Because it is a member of the pea family, Baptisia australis has a really cool relationship with microorganisms in the plant’s root system called rhizobia. The microorganisms inhabit nodules within the root system, where they produce the nitrogen compounds required for the plant’s survival and growth. All plants in the pea family, Fabaceae, have these beneficial microorganisms in their root systems. 

Moving above ground, Baptisia australis has an eyecatching flowering habit in mid summer, where it boasts blue-purple clusters of flowers on dense, upright spikes. The flower shape is very reminiscent of other flowering pea-family members. Its silvery foliage also provides a nice backdrop for other flowering plants, and its wide branching habits further this. In late summer, the large dried pods provide unique adornment/interest in a garden, as well as a food source for foraging birds. In autumn, the foliage dies and the remaining stalks’ color leeches to a dry silver, providing some interest in regards to form and structure in a garden’s “off” season. 

Preferred by gardeners for native plant gardens, stormwater gardens, pollinator gardens, and cottage gardens, this plant has a notable deep taproot, and is hard to move once established. Within the Scott Arboretum & Gardens, you can find Baptisia australis within the Piedmont Meadow, Whittier Meadow, and outside the Dining and Community Commons in the stormwater basins. 

Bright red Malus fruits dangle beneath the leaf-covered branches.
Photo credit: K. Lytle

Malus ‘JFS-KW5’ – Royal Raindrops® crabapple 

Lastly this week is the largest of the three specimens: Malus ‘JFS-KW5’, known familiarly as Royal Raindrops® crabapple. It is an easy cultivar to grow, and was bred specifically for disease resistance and fall color. It is an open-pollinated seedling of Malus transitoria ‘Schmidtcutleaf’. At maturity, the tree has a dense and rounded crown shape, and is extremely drought tolerant once established. The foliage of Royal Raindrops® crabapple is green-purple and deeply lobed, turning an attractive orange-red in autumn, and sporting small maroon crabapples. 

An interesting fact about crabapples in general, is that the fruit often stays on the tree well into winter, providing a food source for birds and other wildlife. In the spring, the tree is adorned with small magenta flowers. Pruning should only be done in late winter to reduce the risk of fire blight. In gardens and greenscapes, Royal Raindrops® crabapple is fairly versatile, favored for specimen or accent trees, or as a small group planting of multiple individuals. Within the Scott Arboretum & Gardens, this plant can be found beside the fish pond in the Terry Shane Teaching Garden and outside the south side of Wharton Hall.

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Plants of the Week: September 18 https://www.scottarboretum.org/plants-of-the-week-september-18/ https://www.scottarboretum.org/plants-of-the-week-september-18/#respond Fri, 18 Sep 2026 21:11:00 +0000 https://www.scottarboretum.org/?p=24697 Plants of the Week by Caelon Shugrue, Public Horticulture Intern Nyssa sylvatica – black tupelo Before its foliage lights up bright red in the fall, Nyssa sylvatica (also called black […]

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Tiny, dark Nyssa fruits protrude from the branches, framing the lawn in front of Old Science Hall.
Photo credit: C. Shugrue

Plants of the Week by Caelon Shugrue, Public Horticulture Intern

Nyssa sylvatica – black tupelo

Before its foliage lights up bright red in the fall, Nyssa sylvatica (also called black tupelo or blackgum), produces something sweeter and tastier. The black tupelo fruits are classified as “drupes,” which are fleshy fruits containing one pit or stone that holds a seed. These small, unassuming drupes are edible and boast a flavorful, sour punch! But be quick with your foraging; birds and other wildlife enjoy the fruits as well. 

Plants typically have male flowers, female flowers, or perfect flowers containing both male and female reproductive parts on a single flower. A monoecious plant has female and male flower parts on the same plant, whereas a dioecious plant has separate functionally female and male flower parts on different plants. For example, corn (Zea mays) plants have male and female flowers on the same plant, making it monoecious. Maidenhair trees (Ginkgo biloba), on the other hand, have separate male and female trees. Black tupelo, however, doesn’t fall into either category. Instead, every Nyssa sylvatica tree has perfect flowers, but they also carry either female or male flowers on the trees as well. Thus, the flowers of black tupelo are a wonderful display of the diversity found in nature. Botanists describe trees like N. sylvatica as “polygamo-dioecious.”

Often unassuming in the spring and summer, black tupelo has simple leaves and a simple form. Native to the United States, Canada, and Mexico, this tree is found in swampy woods and well-draining uplands, where it tolerates standing water and acidic soils. 

These variegated needles on the Pinus densiflora seem to glow in the afternoon light due to their light-yellow coloration.
Photo credit: C. Shugrue

Pinus densiflora ‘Burke’s Red Variegated’ – Japanese red pine

This variegated pine has striking, creamy bands on each needle that persist year round. From far away, this variegation makes the plant appear as though it is glowing. Nestled in the pinetum, this Pinus densiflora ‘Burke’s Red Variegated’ is a type of Dragon’s Eye pine. These types of pines, when viewed from the tip of the shoot, resemble an eye due to the needle variegation. 

The straight species Pinus densiflora is native to Eastern Asia, where it grows best in full sun and well-draining soil. The same is true for this cultivar. In the wild, these trees can get to over 100 feet tall, but the cultivated varieties typically reach 15-20 feet tall. This tree would be a perfect addition to any garden; it is tough and vigorous, and it displays a wonderful combination of color and texture.

Begonia flowers flood the foreground, midground, and background with their white petals and pink petioles.
Photo credit: C. Shugrue

Begonia grandis subsp. evansiana ‘Alba’ – white-flowered hardy begonia

This hardy begonia, native to southern China and Japan, is found throughout the entrance garden around the Cunningham House. Its leaves may seem humble from the top, but the underside boasts a stunning array of vibrant red veins. The foliage of this plant forms a lush mound, and in the late summer and early fall, pale white flowers emerge above the leaves. These flowers may be simple, but the sheer volume of flowers peppered throughout the plant make this species quite striking.

At the tips of Begonia grandis branches, there hides a secret to their success. Miniature bulbs, known as bulbils, form on the ends of these branches. These asexual reproductive bulbils are highly-engineered packages of DNA, designed to survive harsh winters and freezing temperatures. However, they cannot be buried with soil or they won’t sprout. Begonia grandis is the only Begonia species that produces bulbils. Along with its underground tubers, these bulbils aid the plant in forming small clumps and colonies and occasionally taking over the garden.

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Plants of the Week: September 11 https://www.scottarboretum.org/plants-of-the-week-september-11-2/ https://www.scottarboretum.org/plants-of-the-week-september-11-2/#respond Fri, 11 Sep 2026 21:08:00 +0000 https://www.scottarboretum.org/?p=24688 Plants of the Week article written by Kaiden Lytle, education intern Wikstroemia trichotoma – wikstroemia I pass by this plant every day when traipsing across campus, but most readers might […]

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Bushy branches of delicate wikstroemia leaves drape over the edge of a dedicated bench.
Photo credit: K. Lytle

Plants of the Week article written by Kaiden Lytle, education intern

Wikstroemia trichotoma – wikstroemia

I pass by this plant every day when traipsing across campus, but most readers might not be familiar with it. Wikstroemia trichotoma, or wikstroemia, is a rare shrub in the Thymelaeaceae family (along with Daphne and Edgeworthia species). This small evergreen shrub is native to southeast China, Japan, and Korea. For the crafty readers, you might be interested to know that this is one of the plants that is historically used for making washi paper. 

Sporting light green foliage on bright red twigs, this plant is eye-catching despite its small stature. Expect this shrub to grow no more than 6-8 feet, more commonly reaching 1.5-3 feet, and bloom continuously from mid-summer through the end of autumn. Blooms are dainty yellow flowers. In nature, wikstroemia grows in open forests, along roadsides, and on shrubby hills. In the garden, it’s favored for filling empty spaces and adding texture. Plant this drought-tolerant shrub anywhere that has full sun and well draining soil. Within the Scott Arboretum & Gardens, you can find Wikstroemia trichotoma outside the McCabe Library along the Parrish Circle. 

A zig-zagging Fagus sylvatica branch features sharp, pointed buds and toothed beech leaves.
Photo credit: K. Lytle

Fagus sylvatica ‘Asplenifolia’ – fernleaf European beech

Another woody feature this week – although significantly larger than the first – is Fagus sylvatica ‘Asplenifolia’, commonly known as the fernleaf European beech. This deciduous tree is a member of the Fagaceae family, along with oaks and chestnuts. 

The fernleaf European beech is distinguishable by its quirky, narrowly-lobed, lanceolate leaves that are often considered fernlike (hence the nomenclature). In the spring, small yellow flowers adorn the dense oval crown, which make way for edible nuts in spiny husks in the late summer and fall. In terms of structure, Fagus sylvatica ‘Asplenifolia’ is considered a medium-sized tree, with a distinctly low-branching habit and a short trunk. Along this vein, planting this tree along a pathway or garden where the branches have room to arch and droop is a great way to add character and depth to your natural space. Fernleaf European beech is also favored for use as a woody screen or hedge feature, as it recovers well from pruning. 

When considering this tree for your own space, note these things: this tree does not like to be transplanted but is slightly more tolerant of different soil types than its relative the American beech (Fagus grandifolia). In terms of pests and disease, beech trees face a number of potential pests. Beech scale is an occasional problem, identifiable by tiny, white fuzzy spots on the tree. Japanese beetles can leave the leaves skeletonized. And of course, the ever-looming threat of beech leaf disease marks these plants for death with dark-colored bands or blotches on the leaves. Within the Scott Arboretum & Gardens, you can find Fagus sylvatica ‘Asplenifolia’ within the middle planting of the West Circle (between Parrish Hall and the Outdoor Amphitheater). 

Broccoli-like blooms of vibrant pink Hylotelephium flowers.
Photo credit: K. Lytle

Hylotelephium ‘Thunderhead’ – stonecrop

Wrapping up this week’s featured plants is something completely different from the previous two: a xeric plant! Xeric plants are plants that are considered to be drought tolerant, usually of the cactus and succulent relation. Our spotlight this week is the Hylotelephium ‘Thunderhead’, or stonecrop, which is a hardy and deciduous perennial succulent in the Crassulaceae family. Its thick foliage and clumping growth habits give the plant the appearance of broccoli, though there is no botanical relation. 

Blooming in late summer, ‘Thunderhead’ lives up to its name by displaying huge flowerheads with packed, star-shaped flowers, ranging from pink to a magenta-purple. This plant is popular for both its living and dead foliage, as the flowerheads will dry and remain on the stalks through the winter months, providing visual interest and texture to an off-season garden. Planted most commonly in beds, borders, and in gravel and rock gardens, this succulent does well with other xeric type plants that share similar care requirements. Hylotelephium is also best planted in groups, where the individual flowerheads can clump together in masses (perhaps we could call it a cumulonimbus cloud of flowerheads). 

This heat-tolerant species prefers full sun and dry soils, typical for xeric-types. Altogether, this plant is fairly low maintenance, and the Hylotelephium a forgiving species. Within the Scott Arboretum and Gardens, you can find Hylotelephium ‘Thunderhead’ in the Isabella Cosby Courtyard.

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Plants of the Week: August 28 https://www.scottarboretum.org/plants-of-the-week-august-28-2/ https://www.scottarboretum.org/plants-of-the-week-august-28-2/#respond Fri, 28 Aug 2026 21:14:00 +0000 https://www.scottarboretum.org/?p=24681 Plants of the Week by Caelon Shugrue, Public Horticulture Intern Tricyrtis ‘Hototogisu’ – toad lily This week’s first plant is quite a work of art – the toad lily has […]

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Plants of the Week by Caelon Shugrue, Public Horticulture Intern

Small Tricyrtis blooms crookedly zig zag down the stalk.
Photo credit: C. Shugrue

Tricyrtis ‘Hototogisu’ – toad lily

This week’s first plant is quite a work of art – the toad lily has delicate flowers that look similar to those of an orchid. With purple-tipped petals that surround speckled stigmas, this plant has a surprisingly tropical look for a hardy perennial. The genus name Tricyrtis comes from Greek, meaning “three humps.” If you examine the base of the petals (and the buds), you will notice they indeed have small humps! There are many theories about the common name “toad lily.” Some attribute it to the spotted flowers resembling a toad’s skin while others say the plant’s nectar attracts insects that toads like to eat. 

Native to the shaded woodlands of eastern Asia, this specimen is found in the Harry Wood Garden, where it enjoys moist, well-draining, shady conditions. While it is in the Liliaceae family, the toad lily grows via rhizomes not bulbs. It flowers in late summer to early fall, adding interest to gardens where other flowers may have finished blooming. Toad lily is resistant to deer, possibly due to the small hairs on the flowers, but rabbits find it a tasty snack. 

Bright pink anemone blooms.
Photo credit: C. Shugrue

Anemone ‘Deep Curtain Call Rose’ – hybrid anemone

Another late summer bloomer is the Anemone ‘Deep Curtain Call Rose’. In late summer, the flowers emerge on stalks that stretch a few inches above the foliage, making for an interesting texture and form in a garden. This variety is more compact than other anemones, only reaching half the height of the 2-3 ft. tall straight species. The Curtain Call series includes this dwarf anemone variety as well as a ‘Curtain Call Pink’, which produces lighter pink flowers. As a hybrid Japanese anemone, ‘Deep Curtain Call Rose’ does well in partial shade and full sun (as long as it has consistent moisture). This plant spreads via rhizomes and may quickly multiply and get out of hand. 

In the Ranunculaceae (buttercup) family, the genus name Anemone is a Greek word that means “daughter of the wind,” hence a common name for the genus is “windflower.” According to Greek mythology, the origin of the anemone flower is tied to the tragic story of Aphrodite losing her lover Adonis to a wild boar. Aphrodite’s tears mixed with Adonis’ blood, which gave rise to the anemone. You can find this dramatic anemone in the bur oak bed on the North of Kohlberg Hall and imagine this ancient Greek tale.

Fruits from this Symphoricarpos dangle at the end of the branches like weighted-down ornaments, gently curving the branch into a subtle arch.
Photo credit: C. Shugrue

Symphoricarpos × doorenbosii ‘Kolmava’ – Magical® Avalanche Doorenboss coralberry

The last plant this week is Symphoricarpos × doorenbosii ‘Kolmava’, which is a hybrid Doorenboss coralberry. This plant is packed with white snow-like berries that will persist through winter, giving it the common name “snowberry” as well. The berries form at the ends of the branches, often weighing the branches down into a graceful, arching form. Found in the pollinator garden between Martin Hall and Cornell Library, this plant’s berries offer winter foraging opportunities for many birds.

The parent species of this plant are originally from America, but this hybrid and many others were hybridized in the Netherlands by Kolster BV, an expert in cultivating plants for cut flower products. The Netherlands in general is well known for their innovative farming techniques. Despite its size, this country is the largest exporter of live trees, plants, bulbs, and cut flowers. In fact, the US imports $370 million of horticulture products from the Netherlands each year! So, find this plant in the Pollinator Garden and admire it as a feat of Dutch horticultural ingenuity.

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Plants of the Week: August 26 https://www.scottarboretum.org/plants-of-the-week-august-26-3/ https://www.scottarboretum.org/plants-of-the-week-august-26-3/#respond Wed, 26 Aug 2026 19:33:00 +0000 https://www.scottarboretum.org/?p=24668 Plants of the Week by Kaiden Lytle, Summer Education Intern Rudbeckia ‘American Gold Rush’ – black-eyed Susan  If you have visited the Scott Arboretum & Gardens recently, you may have […]

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Swaths of bright yellow Rudbeckia flowers
Photo credit: K. Lytle

Plants of the Week by Kaiden Lytle, Summer Education Intern

Rudbeckia ‘American Gold Rush’ – black-eyed Susan 

If you have visited the Scott Arboretum & Gardens recently, you may have seen the giant drift of bright yellow flowers in the Harry Wood Garden. You might even have been lucky enough to see some matching, bright yellow birds flying in and out of them! These, of course, are the Rudbeckia ‘American Gold Rush’, or black-eyed Susan, and their faithful counterpart the American goldfinch. This plant is a herbaceous perennial in the Asteraceae family, and the parent species is a common member of many a sunny home garden. 

Black-eyed Susans are as hardy as they are pretty, and will tolerate both hot and humid summers, and hot and dry summers (though only drought tolerant once established). Their distinctive blooms feature daisy-like yellow flowers that usually feature a dark brown or black ‘eye’ of florets. This disk of florets in the middle of the bloom is what the American goldfinches love. This species, like many goldfish snacks, have prominent seed heads or capsules that the species loves to pry and nibble. Often found in drifts or masses, these plants typically form clumps as they grow. Rudbeckia is popular for large container plantings, perennial borders, mixed native plantings, and cutting gardens.

The selected cultivar ‘American Gold Rush’ differs not in coloration, but rather the form and function, appearing compact with small foliage (~2 inches) and bred with a specific resistance to septoria leaf spot: a fungal disease that causes small dark spots on the leaves of the plant, starting on the bottom leaves and working its way up, and most transmissible in very moist/humid environments. The cultivar is notably smaller than its seed parent, Rudbeckia fulgida var. deamii, reaching about 1.5 – 2 feet in height. 

Within the Scott Arboretum & Gardens, you can find ‘American Gold Rush’ in the Harry Wood Garden and the John W. Nason Texture Garden.

Stewartia tree with mottled bark and sweeping branched umbrella-ed with leaves.
Photo credit: K. Lytle

Stewartia sinensis  – Chinese stewartia

Just on the edge of the Dean Bond Rose Garden lies a small flowering tree with beautiful mottled brown bark. Easy to miss, especially out of season, this hidden feature is called Stewartia sinensis, or Chinese stewartia. This member of the Theaceae family can be found as a small tree or large multi-stemmed shrub, and is native to central and southeast China. Notably, the latin species name sinensis means “from China.” 

In the gardening world, Stewartia sinensis is usually selected for its ornamental value, as the bark is particularly eye-catching. Paper-like strips peel in a variety of reds and browns, leaving a lighter brown to sand-colored trunk underneath. The tree form typically adheres to a strict, oval shape, but young saplings can open up in the upper canopy as they mature. In early to mid summer, you can expect white blooms of small, fragrant, bowl-shaped flowers, usually accompanied by a small army of buzzing bees. This stewartia is also an autumn favorite. The tree will keep some color in your garden as the foliage turns reddish-purple and is adorned with woody capsules late into the season. 

Given its mature size, branching habits, and woody nature, this plant is usually favored for an accent in a home or pollinator garden, or a stand-alone in your yard. If you need inspiration, this specimen helps lock in the outer border of the Rose Garden, where it drapes gently over the northeastern edge of the garden. 

Tiny, bright red, heart-shaped Euscaphis seed pods.
Photo credit: K. Lytle

Euscaphis japonica  – Korean sweetheart tree

Last this week, but certainly not least, is Euscaphis japonica, commonly known as the Korean sweetheart tree (and recently going as Staphylea japonica). This hardy perennial shrub is currently in its own genus Euscaphis, within the bladdernut family, and is pretty rare to have in cultivation. The genus is currently up for debate as taxonomists consider reclassifying it as a member of the specific bladdernut genus Staphylea, rather than keep it separate on its own. In the Arboretum, this plant is still listed under its solo genus. 

First discovered in the horticulture world in 1985 on the Korean Peninsula, Euscaphis japonica was collected as seeds and sent to the North Carolina State Arboretum for assessment. Because of that preliminary assessment, and subsequent research, I can tell you with certainty what this plant likes and dislikes. It does best in full sun and well drained soils, and it prefers cooler summers to the hot and dry. When considering it for your garden, note that transplants have more success than attempting growing from seed. 

In terms of appearance, the Korean sweetheart tree has irregular, open-form branching, with striking white-striped brown bark. Foliage is unremarkable, except in fall when the leaves turn mahogany. Flowers are small and white to yellow, and appear in early summer. The big draw of this plant, besides the bark, are its heart-shaped seed capsules – hence the “sweetheart” title! They turn an intense hot pink to red color in the fall and pop open to reveal shiny black seeds within. 

Within the Scott Arboretum & Gardens, you can find Euscaphis japonica in the Terry Shane Teaching Garden and on the eastern side of Beardsley Hall.

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Gardener’s Almanac: Watering your Perennials https://www.scottarboretum.org/gardeners-almanac-watering-your-perennials/ https://www.scottarboretum.org/gardeners-almanac-watering-your-perennials/#respond Wed, 19 Aug 2026 20:38:23 +0000 https://www.scottarboretum.org/?p=24641 Public Horticulture Intern Katrien de Waard discusses how to water your garden beds. Tune into the Gardener’s Almanac to learn what we are doing in the garden at this moment. […]

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Public Horticulture Intern Katrien de Waard discusses how to water your garden beds.

Tune into the Gardener’s Almanac to learn what we are doing in the garden at this moment. Learn from Scott Arboretum staff which plants we are pruning, planting, weeding and which pests we are monitoring and removing right now. This virtual almanac is a great reference guide for gardeners.

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Plants of the Week: August 17 https://www.scottarboretum.org/plants-of-the-week-august-17/ https://www.scottarboretum.org/plants-of-the-week-august-17/#respond Mon, 17 Aug 2026 14:31:00 +0000 https://www.scottarboretum.org/?p=24654 Plants of the Week by Natalie Ipock, Summer Horticulture Intern Euphorbia corollata — flowering spurge Next time you walk through the Dean Bond Rose Garden, take notice of all the […]

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Plants of the Week by Natalie Ipock, Summer Horticulture Intern

A mound of dainty white flowers.
Photo credit: N. Ipock

Euphorbia corollata — flowering spurge

Next time you walk through the Dean Bond Rose Garden, take notice of all the perennials intentionally planted throughout the beds. While older rose gardens tend to consist of a monoculture of roses, modern rose gardens plant perennials throughout the roses. The issue with solely planting roses is that disease spreads fast, and pesticides must be sprayed every couple weeks. In 2012, Scott Arboretum transitioned from a monoculture of roses to perennials inter-planted because they attract beneficial insects and establish physical barriers between each rose plant.

Euphorbia corollata is one of the perennials that are currently blooming in the Rose Garden. When I first saw this plant in the Rose Garden I thought it was Gypsophila paniculata, also known as baby’s breath. However, since baby’s breath is an invasive plant in the United States, flowering spurge is a common native alternative. Blooming from June through August, this plant loves full sun and attracts many pollinators. Flowering spurge can also tolerate many soil types, making it adaptable to different environments. Next time you pass through the Dean Bond Rose Garden, appreciate the beauty of the perennials inter-planted amongst the roses. 

Spikes of purple-pink blooms lance the air.
Photo credit: N. Ipock

Physostegia virginiana ‘Vivid’ — obedient plant 

Located in the Cut-Flower Display Garden is a striking plant named obedient plant, featuring beautiful pink blooms along its stalk. When you first think of an obedient plant, you may think of one that doesn’t spread too much. However, that is not the case for Physostegia virginiana ‘Vivid’ since it spreads in clumps and by rhizomes. In actuality, the common name comes from the flowers’ ability to stay in place after gently pushing them to the side. Instead of springing back like most plants, they return back to normal over the course of a few hours. Besides the unique properties of the flowers, make sure to take notice of the square stem since it is in the Lamiaceae family. 

The obedient plant blooms mid-summer to the first frost and is also resistant to deer. They’re perfect for many home gardens because they love full sun to partial sun and are quick growing. Taller plants may flop over, so staking should also be expected for this plant. Pollinators such as bees, butterflies, and hummingbirds love visiting Physostegia virginiana ‘Vivid’, so keep an eye out for these vibrant visitors. 

A silver-spotted skipper butterfly rests on the bright yellow flower head of this double perennial sunflower.
Photo credit: N. Ipock

Helianthus × multiflorus ‘Sunshine Daydream’ — double perennial sunflower 

While this plant may look like a dahlia, it is actually Helianthus × multiflorus ‘Sunshine Daydream’ — a type of sunflower. It originated as a genetic mutation from Helianthus ‘Capenoch Star’ and was discovered by Tim McGinty in 2006 at North Creek Nurseries. 

What makes this particular perennial sunflower stand out from the others is its longer flowering season from summer into fall. Not to mention, it forms in clumps and is drought tolerant. At your next visit to Scott Arboretum, make sure to check out this gorgeous sunflower in the Upper Biostream.

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Gardener’s Almanac: Watering your Containers https://www.scottarboretum.org/gardeners-almanac-watering-your-containers/ https://www.scottarboretum.org/gardeners-almanac-watering-your-containers/#respond Thu, 13 Aug 2026 20:34:30 +0000 https://www.scottarboretum.org/?p=24638 Public Horticulture Intern Katrien de Waard shares tips and tricks to watering your containers. Tune into the Gardener’s Almanac to learn what we are doing in the garden at this […]

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Public Horticulture Intern Katrien de Waard shares tips and tricks to watering your containers.

Tune into the Gardener’s Almanac to learn what we are doing in the garden at this moment. Learn from Scott Arboretum staff which plants we are pruning, planting, weeding and which pests we are monitoring and removing right now. This virtual almanac is a great reference guide for gardeners.

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Gardener’s Almanac: Watering Your Lawn https://www.scottarboretum.org/gardeners-almanac-watering-your-lawn/ https://www.scottarboretum.org/gardeners-almanac-watering-your-lawn/#respond Tue, 11 Aug 2026 20:27:25 +0000 https://www.scottarboretum.org/?p=24635 Public Horticulture Intern Katrien de Waard discusses how to water your lawn. Tune into the Gardener’s Almanac to learn what we are doing in the garden at this moment. Learn […]

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Public Horticulture Intern Katrien de Waard discusses how to water your lawn.

Tune into the Gardener’s Almanac to learn what we are doing in the garden at this moment. Learn from Scott Arboretum staff which plants we are pruning, planting, weeding and which pests we are monitoring and removing right now. This virtual almanac is a great reference guide for gardeners.

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