Shrub · Celastraceae
Evergreen Euonymus
Euonymus japonicus
A tough, shade-friendly evergreen that shears into a hedge and asks for almost nothing in return.
Full sun
Every 7–14 days
USDA 6–9
10–15 ft · 3–4.6 m
Overview
Evergreen euonymus is the kind of shrub you plant and mostly forget. It holds its glossy leaves all year, takes sun or deep shade without complaint, and shrugs off cold down to -9°F (-23°C). That toughness is why you see it clipped into hedges and foundation plantings in so many yards.
It comes from a large genus of spindle trees, and the upright Japanese species (Euonymus japonicus) is one of the most planted. Gardeners reach for it because it shears cleanly, fills in fast, and offers variegated forms with gold or white-edged leaves that brighten a dull corner.
The flowers are small and easy to miss, so this is a shrub grown for its foliage and structure rather than bloom. Give it well-drained ground and a little air around the leaves and it stays handsome for years. Skimp on airflow and you invite the two troubles it's prone to, scale and mildew.
Care
The short version: sun to full shade, well-drained soil, and a deep drink only when the top half of the root zone dries. Shear it to shape in late spring, feed lightly once in early spring, and keep an eye out for scale.
Light
This shrub grows in just about any light, from full sun to full shade. Sun gives it the densest growth and the brightest variegation, while a shadier spot still works but leaves the plant looser and more open.
Water
Water deeply, then wait until the top half of the root zone dries before the next drink, roughly every 7 to 14 days. It's drought tolerant once established, but it will not stand wet feet, so drainage matters more than frequency.
Soil
It adapts to clay, loam, or sand, though a moist, humusy, well-drained soil suits it best. The pH range is wide, from 5.5 to 8.0, which means most garden ground works without amendment.
Temperature
Cold-hardy and heat-tolerant, it takes anything from -9°F to 100°F (-23°C to 38°C). That range covers a long span of climates, which is part of why the shrub turns up almost everywhere.
Humidity
Ordinary outdoor humidity is fine, so there's no level to manage. What matters far more is airflow around the leaves, since still, damp air is what lets scale and powdery mildew settle in.
Feeding
A light hand is all it needs. Work in a balanced general-purpose shrub fertilizer once in early spring and leave it at that, because heavy feeding pushes soft growth that pests favor.
Pruning
Few shrubs take shearing as well as this one. Clip it to shape in late spring after the new growth flushes, and cut out any scale-infested or diseased branches whenever you spot them.
Repotting
In a container it rarely needs moving up a size. Repot only when roots circle the pot, water runs straight through, or growth stalls, since the plant is slow to outgrow its space.
Size & spacing
Left unsheared it reaches 10 to 15 feet (3 to 4.5 m) tall and spreads 5 to 8 feet (152 to 244 cm) wide. Give a hedge that much room, or shear it down and plant closer for a tighter wall of green.
When to plant
This is a four-season evergreen rather than a seasonal crop, so there's no sowing window to chase. Set new plants out in spring or fall while the soil is workable, and they settle in across the cool, damp weeks before summer heat arrives.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Plant: Spring or fall
- Harvest: Inconspicuous greenish-white flowers in late spring to early summer (June)
Hardiness
USDA hardiness zones: 6–9
Temperature: down to -23°C
Troubleshooting
Most euonymus trouble shows up on the leaves, and the worst of it traces back to crowded, stagnant air. Catch scale and mildew early and they stay manageable. Match what you see below, then act before it spreads through the hedge.
White and dark scales crusting the leaves and stems
This is euonymus scale, an armored insect that pierces the tissue and drains the sap until the leaves yellow, spot, and drop early. The slim white males and the dark oystershell-shaped females cluster thick on the undersides of leaves and along the stems. Prune out the worst branches, then time a thorough spray of horticultural oil to the orange crawlers as they emerge in late winter or spring.
Fix:
- Hand-scrape or prune out lightly to heavily infested branches and discard them
- Apply horticultural oil with thorough coverage timed to crawler emergence in late winter or spring
- Use a soil-applied systemic such as dinotefuran once in spring for heavy infestations
- Conserve natural enemies such as predatory beetles (Chilocorus species) and parasitic wasps
Rough corky swellings at the base and on the stems
Tumor-like galls at the crown point to crown gall, a soil bacterium that slips in through wounds and chokes the stems above it until the leaves yellow and branches die back. There is no cure once a stem is galled. Cut affected stems off below the swelling, wipe your tools with rubbing alcohol between cuts, and don't replant a susceptible shrub in that ground for a few years.
Fix:
- Prune affected stems below the galls and sterilize tools with rubbing alcohol between cuts
- Destroy severely infected plants
- Avoid replanting susceptible species in contaminated soil for 2 to 3 years
Powdery white coating on the upper leaf surfaces
A flat white-gray film that rubs off the top of the leaves is powdery mildew, a fungus that curls and scars the young growth. It takes hold in shade and still, damp air, so open the shrub up with spacing and a sunnier spot. Clear the fallen leaves, keep water off the foliage, and reach for a labeled fungicide only if it spreads.
Fix:
- Prune out diseased branches and remove fallen leaves
- Improve air circulation with proper spacing and plant in sunny areas
- Avoid overhead watering
- Apply a labeled fungicide such as myclobutanil, propiconazole, sulfur, or horticultural oil, rotating products to prevent resistance
Curled new shoots and sticky honeydew
Clusters of soft-bodied insects on the tender shoots are aphids, and the sticky honeydew they leave can turn to sooty mold. Knock them off with a strong jet of water, then treat what's left with insecticidal soap or horticultural oil. Go easy on the nitrogen, since the lush growth it pushes is exactly what aphids crowd onto.
Fix:
- Dislodge aphids with a strong spray of water
- Apply insecticidal soap or horticultural oil to affected growth
- Conserve beneficial predators such as lady beetles
Toxicity
Treat this shrub as a hands-off plant around animals and small children. The leaves, bark, and bright fruit carry alkaloids and cardiac glycosides that upset the stomach and, in larger amounts, disturb the heart rhythm. Nothing on it is food, so keep dropped berries and prunings cleaned up where pets and kids gather.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds · People
Cats Toxic
A cat that chews the leaves or fruit usually drools and vomits, with diarrhea and a sore stomach to follow. A larger dose pushes into the heart, where the cardiac glycosides can throw off the rhythm and bring on collapse.
Dogs Toxic
Most dogs start with vomiting, diarrhea, and drooling within hours of eating the foliage or seeds. Eat enough and the same heart-rhythm trouble follows, so call a vet rather than wait it out.
Horses Toxic
Browsing the leaves or bark leaves a horse colicky and dull, with loose manure and weakness. The cardiac glycosides act on the heart, so even a casual nibble of the hedge is worth heading off.
Rabbits Toxic
The alkaloids and glycosides make every part of the shrub unsafe for a rabbit. Even a few leaves can bring on diarrhea and a fast, struggling decline, so keep them clear of the plant entirely.
Livestock Toxic
Cattle, sheep, and goats that graze the foliage can go down with digestive upset and the same heart effects. Fence the shrub off from pasture and don't toss prunings where stock can reach them.
Birds Toxic
The fruit looks tempting but the seeds carry the toxins, and pet birds in particular can suffer gut upset and heart trouble from a taste. Keep dropped berries out of any aviary or run.
People Caution
No part of this shrub is food. Children who eat the bright fruit can get vomiting and diarrhea, and a large amount risks heart-rhythm effects, so plant it where small hands won't reach the berries.
Keep fallen fruit, seeds, and prunings away from pets and children; wash hands after pruning.
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
Poison Control: (800) 222-1222
Canada
Poison Centres: 1-844-764-7669
Varieties
Most of the named forms are sorted by leaf color and size, from gold-edged uprights to tiny box-leaf dwarfs. These are the ones you'll run into most.
'Aureomarginatus'
A popular variegated form with green leaves edged in bright golden-yellow margins.
'Microphyllus'
A dwarf box-leaf form with small leaves and a dense, compact habit that suits low edging the way boxwood does.
'Microphyllus Variegatus'
A small-leaved dwarf form carrying the same fine texture but with white-variegated foliage.
'Green Spire'
An upright, columnar grower clothed in dense, glossy dark green leaves.
How to propagate
Multiplying this shrub is straightforward, and cuttings beat seed for both speed and keeping a variegated form true to the parent.
Stem cuttingsEasy
Summer using semi-hardwood cuttings · Several weeks to a few months to root
Cuttings are the easy and reliable way to multiply this shrub. Take semi-hardwood cuttings in summer and they root well, though they take anywhere from several weeks to a few months to settle in. Each one grows into a copy of the parent, which keeps a variegated form true.
SeedModerate
Sow ripe seed after cleaning the fleshy fruit · Slower and more variable than cuttings
You can grow it from seed, but few gardeners bother. Clean the fleshy fruit off the ripe seed before sowing, then expect slower, more uneven results than cuttings give, with no guarantee a variegated parent comes true.
Myths
Evergreen euonymus is the same plant as the invasive wintercreeper.
These are two different species. Evergreen euonymus (Euonymus japonicus) is an upright shrub, while wintercreeper (Euonymus fortunei) is a climbing groundcover vine that has turned invasive across much of the eastern United States. They share a genus, not a habit, so don't judge one by the other when you choose what to plant.
Sources
- NC State Extension Gardener Plant Toolbox
- Missouri Botanical Garden Plant Finder
- Clemson Cooperative Extension Home & Garden Information Center
- NC State Extension Publications
- UC IPM (University of California Agriculture and Natural Resources)
- Pet Poison Helpline
- USDA / University-sponsored Invasive.org (Center for Invasive Species and Ecosystem Health)