Shrub · Celastraceae
Evergreen Euonymus
Euonymus japonicus
A tough, shade-friendly evergreen that clips into a hedge and asks almost nothing of you 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 can relax around. It keeps its glossy leaves all year, settles into anything from bright sun to deep shade without fuss, and takes cold all the way down to -9°F (-23°C). That easygoing toughness is why you spot it clipped into hedges and tucked along foundations in so many yards, even those tended by first-time gardeners.
It belongs to a big family of spindle trees, and the upright Japanese species (Euonymus japonicus) is one of the most widely planted of the bunch. Gardeners keep coming back to it because it shears cleanly, fills in at a steady pace, and offers variegated forms with gold or white-edged leaves that lift a dull corner.
The flowers are small and easy to overlook, so think of this as a shrub you grow for its foliage and shape rather than its bloom. Give it well-drained ground and a little breathing room around the leaves and it stays good-looking for years. Crowd the air around it and you open the door to the two troubles it leans toward, scale and mildew, but both are easy enough to head off.
Care
The short version: sun all the way to full shade, well-drained soil, and a good deep drink only when the top half of the root zone has dried out. Shear it to shape in late spring, feed it lightly once in early spring, and just keep a friendly eye out for scale.
Light
You can plant this shrub in almost any light, from full sun to full shade, so do not fret over the perfect spot. Sun gives you the densest growth and the brightest variegation, while a shadier corner still works fine, just leaving the plant a little looser and more open.
Water
Water it deeply, then simply wait until the top half of the root zone dries before the next drink, which usually lands somewhere around every 7 to 14 days. Once it is established it shrugs off drought, but it will not put up with soggy feet, so drainage matters far more than sticking to a schedule.
Soil
This shrub adapts happily to clay, loam, or sand, though a moist, humusy, well-drained soil suits it best of all. Its pH range is forgiving, anywhere from 5.5 to 8.0, which means most garden ground works as is without any amending.
Temperature
Both cold-hardy and heat-tolerant, it takes everything from -9°F to 100°F (-23°C to 38°C) in stride. That wide range covers a long list of climates, which is a big part of why you find the shrub turning up nearly everywhere.
Humidity
Ordinary outdoor humidity suits it just fine, so there is no level for you to manage. What matters far more is airflow around the leaves, since still, damp air is exactly what lets scale and powdery mildew settle in.
Feeding
A light touch is all this shrub asks for. Work in a balanced general-purpose shrub fertilizer once in early spring and then leave it be, because heavy feeding only pushes soft growth that pests are drawn to.
Pruning
Few shrubs take a shearing as gracefully as this one, so prune with confidence. Clip it to shape in late spring after the new growth flushes, and snip out any scale-infested or diseased branches the moment you notice them.
Repotting
In a container it seldom needs bumping up a size, so there is no rush here. 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 to grow 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 elbow room, or simply shear it down and plant a little closer for a tighter wall of green.
When to plant
This is a four-season evergreen rather than a seasonal crop, so there is no sowing window you need to worry about catching. Set new plants out in spring or fall while the soil is still workable, and they will settle in nicely over 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 turns up on the leaves, and the worst of it comes down to crowded, stagnant air. Spot scale and mildew early and they stay easy to handle. Find what you see below, then step in before it works its way through the hedge.
Pale and dark scales crusting onto the leaves and stems
Those crusty specks are euonymus scale, an armored insect that taps into the leaf and quietly siphons sap until the foliage yellows, spots, and starts to drop. You will find the slim white males and the dark oystershell females gathered on leaf undersides and along the stems, and the good news is you can take it from here. Cut away the worst branches, then catch the tiny orange crawlers with a careful coat of horticultural oil as they appear 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 lumps swelling at the base and along the stems
Tumor-like lumps at the crown are the sign of crown gall, a soil bacterium that enters through wounds and slowly strangles the stem above until leaves yellow and branches die back. There is no cure for a stem once it has galled, but you can keep it from spreading. Cut the affected stems off below the swelling, wipe your tools with rubbing alcohol between cuts, and give that patch of ground a few years before you plant another shrub that could catch it.
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
Soft white dusting across the tops of the leaves
If a flat white-gray film wipes off the top of the leaves, you are looking at powdery mildew, a fungus that crinkles and scars the tender new growth. It loves shade and still, damp air, so the cure is mostly about light and breathing room: give the shrub a sunnier spot and a little more space. Rake up the fallen leaves, keep the watering can off the foliage, and only reach for a labeled fungicide if it really starts to spread.
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 tender shoots with a sticky shine
Little clusters of soft-bodied insects on the fresh shoots are just aphids, and the sticky honeydew they leave behind can turn into sooty mold if you let it sit. They come off easily, so start with a firm jet of water and then treat anything that lingers with insecticidal soap or horticultural oil. Going gentle on the nitrogen helps too, since the soft, lush growth it pushes is exactly the kind aphids love to settle on.
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
It is best to treat this shrub as a look-but-do-not-eat 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, can disturb the heart rhythm. Nothing on it is food, so keeping dropped berries and prunings swept up where pets and kids gather goes a long way.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds · People
Cats Toxic
A cat that nibbles the leaves or fruit will most likely drool and vomit, with diarrhea and a tender stomach close behind. A bigger mouthful reaches the heart, where the cardiac glycosides can unsettle the rhythm and lead to collapse, so a quick call to the vet is worth it.
Dogs Toxic
Most dogs show vomiting, diarrhea, and drooling within a few hours of eating the foliage or seeds. If enough goes down, the same heart-rhythm trouble can follow, so it is far better to phone a vet than to wait and see.
Horses Toxic
A horse that browses the leaves or bark tends to go colicky and dull, with loose manure and a bit of weakness. Because the cardiac glycosides act on the heart, even a casual nibble of the hedge is worth catching early.
Rabbits Toxic
Every part of this shrub is unsafe for a rabbit thanks to its alkaloids and glycosides. Even a few leaves can bring on diarrhea and a fast, struggling decline, so it is best to keep them well away from the plant.
Livestock Toxic
Cattle, sheep, and goats that graze the foliage can come down with digestive upset and the same heart effects. Fencing the shrub off from pasture and keeping prunings out of reach takes the worry out of it.
Birds Toxic
The fruit looks inviting, but the seeds hold the toxins, and pet birds especially can suffer gut upset and heart trouble from even a taste. Sweeping up dropped berries keeps any aviary or run safe.
People Caution
No part of this shrub is food. A child who eats the bright fruit can end up with vomiting and diarrhea, and a large amount risks heart-rhythm effects, so it pays to plant it where little hands cannot 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 sort out by leaf color and size, from gold-edged uprights to tiny box-leaf dwarfs. These are the ones you are most likely to come across.
'Aureomarginatus'
A much-loved variegated pick whose green leaves are rimmed with cheerful golden-yellow edges.
'Microphyllus'
A dwarf box-leaf type with tiny leaves and a tight, compact shape that edges a bed beautifully, much as boxwood would.
'Microphyllus Variegatus'
A small-leaved dwarf with that same fine texture, only here the foliage is brightened with white variegation.
'Green Spire'
An upright, columnar grower dressed in dense, glossy dark green leaves.
How to propagate
Making more of this shrub is genuinely simple, and cuttings beat seed both for speed and for keeping a variegated form true to its parent.
Stem cuttingsEasy
Summer using semi-hardwood cuttings · Several weeks to a few months to root
If you would like more of this shrub, cuttings are the easy and forgiving route to take. Snip semi-hardwood cuttings in summer and they root happily, though they do take their time, anywhere from several weeks to a few months to settle in. Each cutting grows into a faithful copy of the parent, which is just what you want to keep a variegated form true.
SeedModerate
Sow ripe seed after cleaning the fleshy fruit · Slower and more variable than cuttings
Growing it from seed is possible if you fancy a project, though few gardeners go that way. Clean the fleshy fruit off the ripe seed before sowing, and be ready for slower, more uneven results than cuttings give, with no promise that a variegated parent will come true.
Myths
Evergreen euonymus is the same plant as the invasive wintercreeper.
Take heart, these are two separate species. Evergreen euonymus (Euonymus japonicus) grows as an upright shrub, while wintercreeper (Euonymus fortunei) is a climbing groundcover vine that has become invasive across much of the eastern United States. They share a genus, not a habit, so one should not be judged by the other when you decide 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)