Tree · Rosaceae

Yoshino Cherry

Prunus × yedoensis

Plant a Yoshino cherry and watch clouds of white-to-pink blossom erupt across the yard for two glorious weeks every spring.

Light

Full sun

Water

Every 5–⁠10 days

Hardiness

USDA 5–⁠8

Mature size

30–⁠40 ft · 9.1–⁠12.2 m

Toxic to cats, dogs, horses & more
Yoshino Cherry

Overview

The Yoshino cherry is the star behind those famous spring displays, the ones that ring the Tidal Basin in Washington included. Come early spring it bursts open with fragrant white to pale-pink flowers, often beating the leaves out, and for a couple of weeks the whole canopy looks like fresh snow. Then small black drupes take over, and the birds feast on them all summer.

It's a hybrid cherry, Prunus x yedoensis, a rose-family tree that races into a broad, rounded shape of 30 to 40 feet. Sure, it lives fast and short, usually about 15 to 20 years before borers and canker close in, but that spring show makes every season count.

Hand it a sunny, open spot with moist, well-drained soil and plenty of room, and this tree practically grows itself. You get one short, electric burst of bloom, then a crisp green tree that fires up to gold in fall.

Care

The short version: load it up with full sun, deep moist soil that drains well, and steady water through dry spells. Prune the moment it finishes flowering, give it room to stretch, and keep mowers away from that thin bark.

Light

Pour on the full sun and this tree delivers its heaviest, most even bloom. It'll tolerate partial shade, but the flowering fades and the tree starts stretching toward whatever light it can grab.

Water

Keep the soil consistently moist, watering every 5 to 10 days and stepping it up in a heat wave. It powers through heat and humidity, but its drought tolerance is poor, so never let it bake dry during a long dry spell.

Soil

Set it up in average, medium-moisture, well-drained loam, ideally a little acidic to neutral at a pH of 6.0 to 7.0. It'll thrive in all sorts of soils as long as they drain, since soggy roots are what open the door to rot.

Temperature

This tree is genuinely tough, thriving across USDA zones 5 to 8 and shrugging off everything from -20°F to 100°F (-29°C to 38°C). The only catch is those eager early flowers, since a late frost can brown an open bloom overnight.

Humidity

Regular outdoor humidity is all it craves, so there's nothing to tweak. It powers through muggy summers no problem, though a damp, crowded canopy does hand leaf spot and canker an easier opening.

Feeding

Keep feeding light. A balanced slow-release tree fertilizer in early spring gives a boost only when growth is lagging, and a mature tree in decent soil usually cruises along on nothing.

Pruning

Grab the pruners the moment it's done flowering, because wait too long and you'll clip off next spring's buds. Cut out dead or diseased wood whenever, taking 4 to 8 inches below any black knot swellings, and scrape off tent caterpillar egg masses in winter.

Repotting

This is a landscape tree, not a pot dweller, so repotting never enters the picture. If a young one's been stuck in its nursery pot too long, hunt down any circling or girdling roots and free them before you plant.

Size & spacing

It rockets up to about 30 to 40 feet (9 to 12 meters) tall with a spread to match, so hand it wide, open ground. Plant it well clear of buildings, walkways, and other trees so that rounded crown can really fill out.

When to plant

Get a Yoshino in the ground while it's dormant, in early spring or fall, so the roots dig in before the tree has to carry leaves. Then early spring delivers the payoff, with fragrant white-to-pink flowers exploding over the bare branches in March or April and small black drupes trailing along in summer.

Northern hemisphere

Plant Mar–Apr
Bloom Mar–Apr
Plant Sep–Oct

Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.

  • Plant: Plant balled-and-burlapped or container trees in early spring or fall while dormant.
  • Harvest: Fragrant white to pale-pink flowers in early spring (March-April) before or with emerging leaves; small black drupes follow in summer.

Hardiness

USDA hardiness zones: 5–8

Temperature: down to -29°C

Troubleshooting

Almost everything that troubles a Yoshino shows up on the bark, the twigs, or the leaves, and the sneakiest problems work away out of sight. Get sharp at spotting the early signs and you can cut a problem out before it races through the tree. Match what you're seeing below, then jump on it while it counts.

Severe

Sawdust, gummy ooze, and holes low on the trunk

That's borers boring into the trunk and limbs, dumping frass and gummy ooze near the soil line as branches die back. No spray fixes it, so your best play is a vigorous tree that walls the grubs off itself. Keep mowers and string trimmers off the bark, mulch under the canopy, water through dry spells, and just roll with the fact that these cherries are naturally short-lived at about 15 to 20 years.

Fix:

  • Keep trees vigorous so they can resist and wall off borers
  • Protect bark from mowers and string trimmers with mulch
  • Follow extension timing for borer management on confirmed infestations
Setback

Sunken, oozing cankers with branches dying back

Those weeping, gummy sores are brown rot and canker fungi at work, rotting the little fruit and blighting the twigs too. Cut the infected wood out well below each canker and disinfect your tools between cuts to shut the spread down. Then rake up every mummified fruit and bit of fallen debris so the spores lose their winter hideout.

Fix:

  • Prune out and destroy infected wood well below the canker, disinfecting tools between cuts
  • Remove mummified fruit and fallen debris to reduce inoculum
  • Improve air circulation and avoid wetting foliage when watering
Setback

Hard black knots swelling along twigs and branches

Meet black knot, a fungus of cherries and plums that pumps out rough, coal-black swellings you'll spot easiest in winter once the leaves drop. Prune the knots in late winter before growth fires up, cutting at least 4 to 8 inches below each one, then burn or bury what you take off. Knock out any wild cherry or plum nearby too, since they'll keep feeding the disease straight back to your tree.

Fix:

  • Prune out knots in late winter before growth starts, cutting at least 4-8 inches below each knot
  • Destroy pruned material by burning or burying
  • Disinfect pruning tools between cuts
Cosmetic

Silk tents in the branch forks and shredded leaves

Those webby nests are Eastern tent caterpillars in spring, and come summer Japanese beetles shred the leaves while aphids or scale smear on sticky honeydew and black sooty mold. Rip out the tents and egg masses by hand and plunk the beetles into soapy water. Best part: a healthy, well-watered tree shakes this off easily, since it's really just cosmetic.

Fix:

  • Remove and destroy tent caterpillar tents and egg masses by hand
  • Hand-pick Japanese beetles into soapy water
  • Wash off aphids or treat heavy scale/aphid infestations per extension guidance

Toxicity

Enjoy those flowers to the fullest, but respect the rest of the tree, because it's genuinely dangerous. The leaves, twigs, bark, and seed pits are packed with cyanogenic glycosides that release cyanide, and the danger climbs once leaves wilt after pruning, a storm, or a frost. Keep pets, horses, and livestock clear of clippings and fallen debris, and never let anyone taste the bitter fruit or its pits.

Toxic to

Cats · Dogs · Horses · Rabbits · Livestock · Birds · People

Cats Toxic

If a cat chews the wilted leaves, twigs, or seed pits, keep watch for brick-red gums, wide pupils, and labored, panting breaths. It rarely happens, but cyanide moves fast, so treat any breathing trouble as a straight-up emergency.

Dogs Toxic

A dog that gnaws fallen twigs or cracks the pits runs into that same cyanide risk. Watch closely for heavy drooling, bright-red gums, dilated pupils, and sudden distress, and rush to a vet the moment you see it.

Horses Severe

Horses are the ones really at risk here. Wilted leaves off a pruned or storm-downed branch can be rapidly fatal, triggering bright-red membranes, fast breathing, weakness, and collapse within minutes.

Rabbits Toxic

The foliage, twigs, and pits all carry those same cyanide-releasing compounds, so none of it belongs near a rabbit. Keep every clipping and scrap of fallen debris well out of reach.

Livestock Severe

Cattle, sheep, and goats are extremely vulnerable to wilted cherry leaves, which can kill within 15 to 20 minutes. Watch for slobbering, rapid breathing, a weak pulse, bright-red membranes, and convulsions, and never once toss prunings into a pasture.

Birds Caution

Wild birds gobble the ripe black drupes and pass the hard pits whole, no harm done, which is exactly how the tree spreads its seed. The pits and foliage stay off-limits though, since a cracked seed releases cyanide.

People Caution

Grow this one for the show, not the harvest. The bitter little drupes aren't worth eating and the leaves, twigs, and seed pits hold cyanogenic compounds, so keep curious kids from chewing on any part of it.

Do not leave pruned or storm-downed branches where livestock or horses can browse the wilting leaves; keep fallen twigs and fruit pits away from pets.

Helpline numbers

United States

ASPCA Animal Poison Control: (888) 426-4435 (fee applies)

Poison Control: (800) 222-1222

United Kingdom

Animal PoisonLine: 01202 509000 (fee applies)

NHS: 111

Australia

Animal Poisons Helpline: 1300 869 738

Poisons Information Centre: 13 11 26

Canada

Poison Centres: 1-844-764-7669

Varieties

Yoshino turns up in a handful of named forms, and here's a fun catch: a couple of trees you'll spot sold right beside it are actually close cousins, not true Yoshinos.

'Akebono' (Daybreak)

'Akebono' is the pinker take on Yoshino, opening soft pink and fading toward white while the straight species keeps closer to pure white.

'Snow Fountains' (weeping Higan cherry, Prunus 'Snofozam')

Don't let the label fool you: 'Snow Fountains' is really a weeping Higan-type cherry, not a true Yoshino, and it pours its branches into a fountain of white spring flowers.

Kwanzan (Prunus 'Kanzan')

Kwanzan is a related Japanese flowering cherry that ditches Yoshino's single white-to-pink blooms for big double pink flowers loaded with 20 to 30 petals.

How to propagate

Since Yoshino is a hybrid that won't grow true from seed, every tree is a clone, which means propagation is really the nurseries' game.

GraftingDemanding

Late winter to early spring (bench grafting) or summer (budding) · 1-2 seasons to a sellable grafted tree

Because Yoshino is a hybrid, its seed won't come true, so growers clone it every time. The go-to method is grafting or budding onto cherry rootstock, either bench grafting in late winter to early spring or budding in summer, and it takes 1 to 2 seasons to build a saleable tree. It's demanding work, so leave it to a nursery.

Stem cuttingsDemanding

Early summer (softwood) · Several weeks to root, then 1-2 seasons to establish

Feeling adventurous? Try softwood cuttings taken in early summer and rooted under mist with a rooting hormone. They need several weeks to root and another 1 to 2 seasons to establish, and since they're way less reliable than grafting, hardly anyone leans on them.

Myths

Myth

Those little black cherries are a tasty snack you can eat.

Reality

Birds go wild for the small black drupes, but for people they're bitter and basically inedible. The seeds inside pack the same cyanogenic compounds as the rest of the tree, so celebrate this as an ornamental, not a harvest.

Myth

Fresh green leaves are every bit as dangerous as the rest of the tree.

Reality

Green, undamaged leaves on the tree are actually pretty low risk. The real trouble kicks in when leaves wilt or get damaged, say from a downed limb, a pruning cut, or a hard frost, because that's when the cyanide spikes and horses and livestock get poisoned.

Sources