Tree · Taxaceae
Japanese Yew
Taxus cuspidata
A forgiving, shade-loving evergreen for hedges and topiary that also happens to be one of the deadliest plants you can grow.
Partial shade
Every 7–14 days
USDA 4–7
4–25 ft · 1.2–7.6 m
Overview
Take heart, because Japanese yew is one of the more forgiving evergreens you can plant. It grows slowly, holds its dark green needles all year, and takes shearing better than nearly any other shrub, which is why it turns up as hedges, screens, and topiary in cold-winter gardens. Hardy through zones 4 to 7, it shrugs off deep cold and deep shade without fuss, so you have room to learn as you go.
There is one thing you must never relax about, though. Every part of the plant except the soft red aril carries taxine alkaloids, a poison that goes straight for the heart. The needles, bark, and seeds stay toxic whether fresh, wilted, or long dried, and the amount that can harm a horse or a child is frighteningly small.
Grow it where drainage is sharp and where the danger is fully understood, and it will ask very little of you while living for decades. Just remember it has no place near a pasture, paddock, or play area, and its clippings must never be left where an animal might reach them.
Care
The short version: you can do this, plant it in well-drained soil anywhere from sun to deep shade, water it until it settles in and then only in drought, shear it in early spring, and keep every part of it well away from animals and children.
Light
You can breathe easy about light with this one. Japanese yew grows in full sun straight through to deep shade, though part shade makes it happiest. That easygoing nature is exactly what lets it thrive on the shady north side of a house where so little else will.
Water
Keep the soil evenly moist but never soggy while a young plant is settling in, then water mostly during dry spells once it has established. The real risk here is not too little water but too much, since standing water and heavy soil bring on fatal root rot. Let the top half of the soil dry out between drinks.
Soil
Give it moist, fertile, well-drained sandy or loamy soil and it will ask for little more. A pH from 5.5 to 7.0 suits it fine, but drainage is the one thing you cannot let slide. Yew has zero tolerance for wet ground and will rot if it sits in it.
Temperature
This is a wonderfully cold-hardy evergreen, at ease from about -20°F to 95°F (-29°C to 35°C). Deep winter cold will not trouble it, though dry winter wind can scorch the needles on exposed plants, so a sheltered spot is a kindness.
Humidity
Average outdoor humidity is truly all it needs, so there is no number for you to chase. Good air movement helps far more than any moisture target, keeping the dense interior dry and free of pests.
Feeding
A light hand is more than enough. Work in a balanced slow-release fertilizer or composted organic matter in early spring and leave it there, since this slow grower has no appetite for heavy feeding.
Pruning
Yew is one of the few conifers that takes hard shearing and renewal pruning in stride, even when you cut back into old wood, so you can be bold. Shape hedges and topiary in early spring before new growth pushes out. Never leave the clippings where an animal can reach them, because they stay deadly long after they wilt.
Repotting
Yew is rarely grown in a container and seldom needs repotting, so this is one less thing to worry about. When roots start circling the pot, pushing out the drainage holes, or water runs straight through, simply move it up a size or into the ground.
Size & spacing
Size varies a lot with the cultivar, from low spreaders to columns reaching 4 to 25 feet (1.2 to 7.5 m) tall and spreading 5 to 25 feet (1.5 to 7.5 m) across. Read the tag for your variety and give it room to fill out without crowding, and you will be glad you did.
When to plant
Yew is a woody evergreen, so relax about sowing seasons, there simply isn't one, only a friendly window for getting young plants in the ground. Set them out in spring or early fall when the soil works easily and the roots have time to settle before heat or hard frost. Quiet flowers appear in spring, and female plants carry their red arils into fall.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Plant: Spring or early fall
- Harvest: Inconspicuous spring; red arils on female plants in fall
Hardiness
USDA hardiness zones: 4–7
Temperature: down to -34°C
Troubleshooting
A happy yew is remarkably easy to live with, and most of what goes wrong comes down to wet feet, harsh winter exposure, or a couple of stubborn pests. Learn the early signs below and you can step in gently before anything takes hold. Match what you see, then act while it still makes a difference.
Yellowing needles above soft, darkened roots
If the foliage yellows and browns while the whole plant slips downhill, gently dig at the base and you will likely find root rot, dark and mushy roots that come from ground staying too wet. Do not blame yourself, since a low or packed spot holds water long after you would guess. Shift the plant to a drier, better-drained home, water far less, and let go of any part that is too far gone.
Fix:
- Improve drainage or relocate the plant to a well-drained site
- Reduce watering and avoid standing water
- Remove and discard severely affected plants
Bronzed needles on the windy side come spring
Those brown, bronzed needles that show up on the windward side after a hard season are winter burn, and they look scarier than they are. What happened is simple: cold, dry wind pulled moisture from the needles while the frozen roots could not send more up. Give the plant a deep drink in fall before the ground freezes, screen it with burlap where wind hits hardest, and once new shoots appear you can trim the dead bits away with confidence.
Fix:
- Water thoroughly in fall before the ground freezes
- Provide a windbreak or burlap screen in exposed sites
- Prune out dead foliage in spring once new growth resumes
Notched leaf edges with a plant that quietly fades
When the edges of the leaves look chewed into little C-shaped notches and the plant seems to be fading, the black vine weevil is usually the culprit, with its grubs feeding on the roots out of sight while the adults nibble the foliage. Scale and mealybugs sometimes join in and drain a plant that is already weak. You can handle this: treat the weevil at both the adult and grub stage, wipe out scale with horticultural oil, and keep the plant strong with sharp drainage and steady care.
Fix:
- Treat for weevils targeting adults and larvae
- Control scale and mealybugs with horticultural oil
- Maintain plant vigor with proper drainage and care
Toxicity
Please give this plant the respect a real hazard deserves, not the shrug you would give an ordinary shrub. Nearly every part holds taxine alkaloids that can stop the heart with little or no warning, and dried clippings stay just as lethal as fresh growth. It has killed cats, dogs, horses, livestock, and people, so keep it well away from animals and children and never plant it near pasture.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds · People
Cats Severe
Please take this one seriously, because even a single nibble can be fatal for a cat. You might see trembling, an unsteady walk, and labored breathing before the heart fails, and sometimes there is no warning at all.
Dogs Severe
A dog that chews any part of this plant is in real danger. Drooling, vomiting, and muscle tremors can slide into seizures and a sudden stopping of the heart, often within just a few hours.
Horses Severe
Horses are heartbreakingly sensitive, and a single mouthful of foliage or clippings can take one down in minutes. Trembling, a wobbly gait, and a slowing heartbeat may come first, though many horses are simply found already gone.
Rabbits Severe
The same taxine alkaloids stop a rabbit's heart just as fast, and it takes only a tiny amount. Keep every scrap of the plant, whether fresh or dried, safely out of reach.
Livestock Severe
Cattle, sheep, and goats are far too often found dead within hours of grazing yew or eating dumped trimmings. Any that linger show trembling, hard breathing, and a sudden collapse as the heart gives out.
Birds Severe
Birds can be poisoned by the needles and the seed, meeting the same cardiac collapse that strikes other animals. Only the soft red aril flesh is harmless, and the hard seed tucked inside it is not.
People Caution
This is genuinely one of the most dangerous plants you can grow, and human deaths from eating the needles or seeds are well documented. The red aril flesh on its own is non-toxic, but the seed inside is deadly, so keep children well away and never trust any green part as safe.
Never leave yew prunings or clippings where animals can reach them; wilted and dried clippings remain lethal. Keep all plant parts away from children, pets, horses, and livestock, and never plant near pasture or dump trimmings within animal reach.
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 yews you will meet in the landscape are Anglojap hybrids or close cousins, picked for their shape and their hardiness. Here are the ones you are most likely to come across.
Taxus × media 'Hicksii'
This Anglojap yew climbs upright and columnar to roughly 20 feet, so it has long been a go-to choice for tall hedges and screens.
Taxus × media 'Densiformis'
A friendly, low semi-dwarf that spreads wider than it stands tall, settling at around 3 to 4 feet.
Taxus × media 'Hatfieldii'
A male and fruitless selection with a broad pyramidal to columnar habit that grows to about 12 feet.
Taxus baccata (English yew)
The European parent behind the Anglojap hybrids, lovely to look at but not as cold-hardy as Japanese yew.
Taxus canadensis (Canada yew)
A low, spreading native of North America that welcomes deep shade and takes harder cold than most of its kin.
How to propagate
Yews grow from two starting points, and neither is quick, so let patience be your guide. Cuttings are how nurseries keep a cultivar true, while seed is a slow, fussy route worth trying only if you enjoy the wait. Handle every part with care at each stage, since the plant is toxic throughout.
Stem cuttingsModerate
Late summer to fall (semi-hardwood cuttings) · Several weeks to a few months to root
Cuttings are the dependable way to copy a named cultivar true to type, and they are well within reach for a careful beginner. Take semi-hardwood cuttings in late summer or fall, then be patient, since yews are slow and the roots can take anywhere from several weeks to a few months to form.
SeedDemanding
Fall after cleaning seed from arils · Often a year or more due to deep dormancy
Growing from seed rewards patience more than skill. Clean the seed from the red arils in fall and give it a long cold stratification to break its deep dormancy, after which it comes up slowly and unevenly, often a year or more down the road. Handle the seed carefully, because it is highly toxic.
Myths
The red yew berries are safe to eat because birds eat them.
It is easy to be fooled here, but only the soft red aril, the fleshy cup around the seed, is non-toxic, and that is usually the part a bird passes whole. The hard seed inside is packed with taxine alkaloids, and so are the needles and bark. Swallowing that seed can be enough to kill a person, so it is safest to treat the entire plant as off-limits.
Dried or wilted yew clippings are safe to feed or discard near animals.
Drying the clippings does nothing to weaken the poison. Wilted and dead trimmings stay every bit as lethal as living growth, and they are a common cause of loss because the limp foliage tempts animals that would ignore the plant on the branch. Many horse and livestock deaths trace right back to trimmings tossed over a fence.