Shrub · Garryaceae
Japanese Laurel
Aucuba japonica
Give it shade and good drainage, and Japanese laurel returns glossy gold-speckled foliage with almost no fuss.
Partial shade
Every 7–14 days
USDA 6–10
6–15 ft · 1.8–4.6 m
Overview
Japanese laurel, Aucuba japonica, is an evergreen shrub in the Garryaceae family, prized for the gold-speckled foliage that has earned it names like Gold Dust Plant and Spotted Laurel. It thrives where many shrubs sulk, taking partial to full shade and shrugging off poor soil and urban pollution, which makes it one of the easier woody plants to keep.
Growth is slow, but given time the species reaches 6 to 15 feet (1.8 to 4.5 m) tall and spreads 4 to 9 feet (122 to 274 cm), hardy across USDA zones 6 through 10. It serves equally well as a shaded outdoor shrub or an indoor specimen, and a dwarf form like Nana stays far smaller for tight spaces.
One detail shapes whether you ever see fruit: the plant is dioecious, meaning male and female flowers grow on separate individuals. Only females bear the bright red drupes, which ripen in fall and hold into spring, and they need a male nearby to pollinate, while the self-fertile cultivar Rozannie fruits on its own.
Care
The short version: site it in partial to full shade with good drainage, let the top half of the soil dry between waterings on established plants, and feed once with a balanced slow-release fertilizer in spring.
Light
Aucuba is happiest in partial to full shade, and it accepts deep shade or a little morning sun without complaint. Strong direct sun is the enemy here: it scorches the leaves, with young foliage blackening while the shaded interior stays green. The gold-dusted variegated forms actually hold their color best in deep shade, so do not push them into sun to brighten them.
Water
Keep young plants evenly moist while they root in, watering every 7 to 14 days, then ease off once they establish, because mature aucuba has very good drought tolerance and prefers the top half of the soil to dry between drinks. The real risk is the other direction: wet, soggy ground starves the roots of oxygen and invites Phytophthora root rot.
Soil
It is not fussy about soil, growing in loam, clay, or sandy ground so long as the drainage is good and the organic matter is high. It even shrugs off poor soils and urban pollution. Aim for a pH between 5.5 and 7.0, which is mildly acidic to neutral.
Temperature
Hardy from 0°F to 86°F (-18°C to 30°C) and reliable across zones 6 through 10, aucuba handles a wide range. Its weak point is cold, drying wind, which browns the evergreen leaves over winter, so give it a sheltered position.
Humidity
Average household and outdoor humidity suits it, and there is no target percentage to chase. Indoors, the one thing to watch is very dry air, which favors spider mites, so do not let a plant sit beside a hot, drying vent.
Feeding
This is a light feeder. A single application of a balanced slow-release fertilizer in spring is all it needs for the year, and overdoing it brings no benefit.
Pruning
Prune in late winter to early spring, before the new growth pushes, because the flowers bloom on new wood and cutting at this point protects the coming display. Cut leggy stems back hard to keep a dense, rounded habit; the shrub tolerates heavy pruning well.
Repotting
For container or indoor plants, repot every 2 to 3 years. The signals that it is time are roots circling the pot or pushing through the drainage holes, water draining straight through, and stunted growth with yellowing leaves.
Size & spacing
Allow room for a sizeable shrub over time, 6 to 15 feet (1.8 to 4.5 m) tall with a spread of 4 to 9 feet (122 to 274 cm). Growth is slow, but plan the spacing for the mature footprint, or choose the dwarf Nana, which holds to about 3 feet by 3 feet.
When to plant
Aucuba is a slow, long-lived shrub, so timing centers on planting and a single annual feed rather than a busy seasonal routine. Set new plants out in spring or fall in a shaded, wind-protected spot, and the small reddish-purple flowers follow each March and April, with red berries forming on female plants in fall.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Plant: Spring or fall in a shaded, wind-protected site
- Harvest: March to April (small reddish-purple flowers); red drupes ripen in fall and persist into spring
Hardiness
USDA hardiness zones: 6–10
Temperature: down to -23°C
Troubleshooting
Most aucuba troubles trace to one of two things: too much sun, or soil that stays too wet. Read the foliage and the roots, match what you see below, then fix the underlying condition rather than chasing the symptom.
Wilting plant with dark, mushy roots
A shrub that wilts and yellows while its roots turn brown, soft, and foul-smelling is showing classic root rot, driven here by Phytophthora taking hold in soil that stays soggy. Saturated ground starves the roots of oxygen, and the pathogen moves in on that weakness, rotting the very tissue the plant needs to draw water; that is the cruel paradox of a wilting plant in wet soil. Correct the drainage and cut off the overwatering first. Lift and discard any specimen too far gone, and reset the healthy ones into well-drained soil.
Fix:
- Improve drainage and stop overwatering
- Remove and discard severely affected plants
- Replant healthy specimens in well-drained soil
Sticky leaves with bumps or cottony specks on the stems
Sticky foliage and a film of black sooty mold point to a sap-feeding insect, and the bumps or cottony specks tell you which one. Firm armored or soft bumps along the stems are scale, white cottony masses are mealybugs, and fine webbing on the undersides means spider mites, which favor the dry air of indoor plants. All three excrete honeydew, and the sooty mold simply grows on that sugary residue. Wipe or prune out light infestations, treat what remains with horticultural oil or insecticidal soap, and move air around indoor plants to deny mites the still, dry conditions they prefer.
Fix:
- Wipe off or prune lightly infested parts
- Treat with horticultural oil or insecticidal soap
- Improve air circulation for indoor plants
Leaves scorched black on the sun-facing side
When the foliage facing the sun blackens or burns to brown patches while the shaded interior leaves stay green, the cause is too much direct sun, and young leaves take the worst of it because their tissue has not yet hardened. Dry wind, whether cold or hot, does the same kind of damage by pulling moisture from the leaf surface faster than the plant can replace it. The remedy is positional: move the shrub into deeper shade with shelter from wind, or supply afternoon shade in hot climates, then strip off the badly damaged leaves so the plant can push clean growth.
Fix:
- Relocate or transplant to a shadier, wind-protected location
- Provide afternoon shade in hot climates
- Remove badly damaged leaves
Toxicity
This is only a low-severity plant, but it is still poisonous to swallow. The fruits and leaves carry the glycoside aucubin, which brings on nausea, vomiting, and gastrointestinal upset. The foliage is perfectly safe to touch and causes no skin reaction; the precaution is simply to keep the berries and leaves away from pets, livestock, and small children.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds · People
Cats Mild
A cat that chews the leaves or berries tends to drool first and then vomit as the aucubin irritates the gut. The upset usually settles on its own once the plant material is out of the system, but call your vet if the vomiting keeps going.
Dogs Mild
Dogs typically respond with vomiting and loose stool after a nibble, the gut reacting to the aucubin in the leaves and fruit. The signs are mild and generally pass within a day.
Horses Mild
In horses the aucubin leaves them off feed, with a queasy, unsettled stomach following a mouthful of foliage. Keep prunings and clippings out of their reach so they are not tempted to browse.
Rabbits Mild
A rabbit's small body size means very little of the plant delivers an outsized dose, so the same digestive upset arrives fast. Offer no part of this shrub to a rabbit.
Livestock Mild
Goats, sheep, and cattle that take a mouthful tend to drool and develop a sour stomach as the aucubin works on the gut. Fence the shrub off where grazing animals can reach it.
Birds Caution
Wild birds eat the ripe red drupes and pass the seed unharmed, which is how the plant spreads in the garden. With cage birds, keep them away from the leaves as a precaution.
People Caution
No part of this shrub is meant to be eaten, and the fruit and leaves cause nausea and vomiting if swallowed. Handling the foliage is fine and will not irritate the skin, but keep the berries away from small children.
Foliage does not cause contact dermatitis and is safe to touch; keep berries and leaves away from pets and small children.
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
A few named selections stand out for their foliage markings or their fruiting habit. These are the forms you are most likely to meet at the nursery.
Variegata (Gold Dust)
Glossy dark green leaves heavily speckled with yellow, and the gold dusting reads brightest when the plant is grown in full shade.
Picturata
Each leaf carries a bold golden-yellow center ringed by a green margin that is itself flecked with yellow.
Nana
A slow dwarf form that tops out near 3 feet by 3 feet, far smaller than the species, which suits it to tight spaces.
Rozannie
A compact, self-fertile cultivar that sets red berries on its own without a separate male plant nearby.
How to propagate
Aucuba is straightforward to multiply, whether by cuttings, by layering a low branch, or from seed. Because the plant is dioecious, keep track of sex as you go if berries are the goal.
Stem cuttingsEasy
Summer to early fall (semi-hardwood cuttings) · 6 to 10 weeks to root
Take semi-hardwood cuttings from summer to early fall, when the current season's wood has begun to firm, and expect rooting in roughly 6 to 10 weeks. Because the plant is dioecious, label each cutting as male or female taken from its parent, since the clone will keep that parent's sex and only females will ever fruit.
SeedModerate
Sow ripe seed in fall · Several weeks to germinate; slow to reach size
Sow ripe seed in fall and allow several weeks for germination, then patience, because seedlings are slow to reach size. Seed-grown plants are also variable, and since the species is dioecious you cannot tell a seedling's sex until it produces its first flower.
LayeringEasy
Spring to summer · Several months to root
From spring to summer, peg a low, flexible branch down into the soil and let it root while still attached to the parent, which keeps it supplied throughout. Rooting takes several months, so confirm the new roots are well formed before you sever the layer from the mother plant.
Myths
Plant a single aucuba and it will reliably produce its showy red berries.
The species is dioecious, so male and female flowers form on separate plants, and only females fruit. A lone female needs a male nearby to pollinate her, or you can grow the self-fertile cultivar Rozannie, which berries on its own.
Aucuba is harmless because birds eat the berries with no ill effect.
Wild birds do digest the ripe drupes and spread the seed, but the fruits and leaves hold the glycoside aucubin, which causes nausea, vomiting, and gastrointestinal upset in pets, livestock, and people. The foliage is safe to touch; the danger is in swallowing it.