Common yew
Taxus baccata
A shade-tolerant evergreenDescribes foliage that stays on the plant all year, even in winter. that can rebuild from old wood when most conifer hedges cannot.
Common yew (Taxus baccata) is a bushy evergreen conifer for full sun to shade. Unclipped, it can exceed 12m high and 8m wide; RHS H7 means below −20°C. Its insignificant reproductive structures appear in spring, followed by red arils on pollinated female plants in autumn. It needs well-drained soil.
As a dark evergreen framework, yew can set off the flowers of a hydrangea or shelter a garden rose. You can also return to the plant encyclopedia.
What to know before planting common yew
When should yew be planted, fed and pruned?
The RHS gives late October to mid-December and March as the best UK planting windows. Insignificant pollen and ovulate structures appear in spring, then red arils mature on pollinated female plants in autumn. Trim in summer or early autumn; renovate gradually in mid-spring.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Plant | ||||||||||||
| Pollen / seed cones | ||||||||||||
| Red arils | ||||||||||||
| Trim | ||||||||||||
| Renovate | ||||||||||||
| Monitor water | ||||||||||||
| Feed if needed |
How often should yew be watered, and does it need NPK fertiliser?
Water the complete rootballThe block of soil left around a plant's roots when it is planted or moved. at planting, then monitor it for at least the first year. Compare several points within and beside the rootball, because a dry-looking surface does not reveal moisture at its centre. When the rootball begins to dry, water slowly enough to moisten it throughout, then let surplus drain away. Count only rain that entered the root zoneThe area of soil occupied by a plant's roots, where water and nutrients matter most.. Heat, drying wind, sandy soil and rain shadows shorten the checking interval; moisture-retentive clay requires more time and a drainage check.
An established yew in open ground should not need routine watering. Check it during prolonged drought, especially after recent hard pruning, but do not keep the soil permanently wet. Container yews have a much smaller reserve: inspect their compost frequently in summer and during dry winter spells, water before it dries completely, and never leave the pot standing in water. Dull or yellow needles are not proof of drought; in saturated ground they may be the first sign of root failure.
Healthy yews generally need no extra feed. Surface-applied, well-rotted compost is a soil amendmentAn addition that durably improves a soil's structure or fertility., not a cure for deficiency. If a growth boost is wanted, the RHS yew guide says a general fertiliser may be applied in late winter, following the product instructions. A separate RHS teaching page labels Growmore NPKThe three main nutrients in a fertiliser: nitrogen, phosphorus and potassium. 7-7-7 as a balanced British fertiliser example: it is not a yew-specific formula or universal rate. Check the actual pack and follow its instructions. RHS also notes that container yews benefit from regular feeding because compost nutrients are soon depleted; use the chosen product as labelled.
Why is a yew turning yellow or brown?
Start with the pattern, season and root-zone conditions. Several unrelated problems produce brown needles, so colour alone is not a diagnosis.
| Observable sign | Possible cause | Favouring factors | Prudent first action |
|---|---|---|---|
| Older inner needles yellow, then drop, while current outer growth stays green | Natural seasonal needle drop | For yew, late spring or early summer as older needles reach the end of their life | Check that the pattern stays internal and seasonal; do not treat. Seek diagnosis if current growth or whole branches are affected. |
| General yellowing and branch dieback in persistently wet ground; sometimes sap near the soil line | Excess soil moisture or Phytophthora disease | Poor drainage, a low spot or heavy clay kept saturated | Pause automatic watering, inspect drainage and the root collar, then obtain a firm diagnosis. Remove a severely affected plant only after confirmation. |
| Brown or purplish tips in late winter or early spring, worst on one sunny or windward side | Winter injury | Drying wind, winter sun or reflected light while the root zone is cold | Wait for mid-spring growth before deciding what is dead, then prune only confirmed dead tissue. |
| Brown needle tips and branches mainly facing a road or treated path | De-icing salt spray or run-off | Road exposure; branches protected by snow are often less affected | Compare exposed and protected faces, then prevent further salt exposure. Seek diagnosis if browning spreads beyond that pattern. |
| Needles tied or chewed with silk, with a caterpillar present | Tortrix moth larva | The organism is visible inside tied shoots | Keep a sample for identification and monitor fresh growth; choose no control until the pest and current UK authorisation are confirmed. |
| Scales or white wax on shoots and needles, sometimes honeydew or sooty mould | Scale insect or mealybug | Colonies are physically present; container plants may also need root inspection for vine-weevil larvae | Inspect shoots, needle undersides and the rootball, then identify the organism before choosing any authorised or biological control. |
Which common yew suits the available space?
These are long-term RHS size bands, not guaranteed dimensions. Soil, exposure, pruning and time still alter the result.
| Species or cultivar | Defining character | Useful situation |
|---|---|---|
| Taxus baccata | Bushy, dark-green species; over 12m × over 8m unclipped | Large garden, hedge, shade tree or specimen |
| T. baccata ‘Fastigiata’ | Upright Irish yew, about 8–12m × 2.5–4m | Strong vertical accent and narrower sites |
| T. baccata ‘Fastigiata Aureomarginata’ | Golden-edged column, about 2.5–4m × 1.5–2.5m | Formal accent with a smaller footprint |
| T. baccata ‘Repandens’ | Low, spreading form, about 0.1–0.5m × 2.5–4m | Bank, dry shade and evergreen ground cover |
| T. baccata ‘Standishii’ | Compact golden column, about 1–1.5m × 0.5–1m | Small garden, rock garden or drained large pot |
| T. baccata ‘Semperaurea’ | Broader golden shrub, about 2.5–4m each way | Structured border, away from scorching exposure |
Yew is not merely a hedge to be constrained. It is a living framework that keeps the garden legible in winter and can rebuild from old wood. Its toxicity must therefore be treated as a design constraint from the first sketch.
Habit, old wood and the limits of common yew
The unclipped species becomes a broad, bushy tree, while ‘Fastigiata’ rises as a column and ‘Repandens’ spreads close to the ground. That range is why no single spacing is defensible: mature cultivar width, the intended hedge or specimen role and the space available must decide before planting.
Taxus baccata can reshoot from living old wood. For an overgrown hedge, the RHS recommends a three-year renovation in mid-spring: top first, then one side in each following year. Dead wood cannot be revived, and a severely reduced screen takes time to close, so routine trimming should remain proportionate.
Ingestion can be fatal. The RHS states that yew is toxic except for the red aril flesh, while the enclosed seed is highly poisonous. That distinction is never an invitation to taste it. Do not use yew where children, horses, livestock or pets cannot reliably be kept away from foliage, seeds and clippings. This gardening guide does not replace the locally appropriate poison-information or veterinary service after suspected exposure.
How to establish yew without creating its future disease
Read drainage before shade
After heavy rain, check whether water drains or remains around the proposed root collar. Yew accepts shade; it does not accept a persistently saturated planting pit.
Choose the mature volume
Compare the broad species, columnar ‘Fastigiata’ and spreading ‘Repandens’. Mature width determines the site and prevents repeated severe clipping.
Keep the root collar visible
Loosen compacted ground across a broad area and plant at rootball level. If water collects, choose another position or correct the drainage before planting.
Monitor, then taper
Rootball condition and meaningful rain decide during establishment; an established ground plant needs help only in prolonged drought. Reject yew beside grazing or where access by young children and animals cannot be controlled.
Five practical questions about common yew
When is the best time to plant a yew hedge in the UK?
The RHS recommends late October to mid-December or March. Avoid frozen or saturated soil and dry, hot spells. Water the whole rootball at planting and monitor it for at least the first year.
How do I know when a newly planted yew needs water?
Do not use a fixed interval. Compare several points within and beside the rootball; when it begins to dry, water slowly through its full depth, count meaningful rainfall and let surplus drain.
Why has my yew turned brown?
One-sided browning after winter points towards scorch or road salt; general decline in wet soil makes root damage or Phytophthora more likely. Older inner needles can also shed naturally. Pattern, season and root condition distinguish these causes.
Can an overgrown yew hedge be cut back into old wood?
Yes, if the wood is alive. Yew is one of the few conifers that reshoots from old branches. A three-year renovation in mid-spring preserves more screening and reduces stress compared with cutting every face at once.
Is yew safe around children, pets or horses?
No accessible part should be treated as safe to eat. The red flesh of the aril is not poisonous, but its enclosed seed and the rest of the plant are highly toxic. Keep plants and clippings inaccessible, and choose another species wherever access cannot be reliably controlled.
UK horticultural and diagnostic sources
- Royal Horticultural Society — How to grow yew : the principal UK cultural reference used throughout this profile.
- Royal Horticultural Society — NPK labelling example : the cited 7-7-7 Growmore example; actual product labels must be checked.
- Royal Horticultural Society — Yew plant guide : cultivar habits, dimensions and garden uses.
- Royal Horticultural Society — Taxus baccata : species habit, ultimate size, H7 hardiness, spring reproductive structures and potential pests.
- Universeity of Wisconsin Extension — Seasonal needle drop : yew-specific timing and pattern of normal older-needle shedding.
- Universeity of Wisconsin Extension — Winter burn : spring assessment and pruning only after living and dead tissue can be distinguished.
- Penn State Extension — Taxus diseases : symptoms and site factors separating excess moisture and Phytophthora decline.
- NC State Extension — Taxus baccata : root rot, winter burn, blights, scale, mealybug and vine weevil as diagnostic possibilities.
- Universeity of Minnesota Extension — Yew diagnosis : symptom patterns separating winter injury from salt damage.