# Yew: the poisonous, long-lived conifer of Czech forests and gardens

*Taxus*

> Source: https://www.stromyvcr.cz/en/yew-taxus/ · Author: Tomáš Rohlena · Updated: 2026-10-30

Yew (Taxus) is an evergreen, slow-growing and very long-lived conifer whose every part except the red aril is poisonous. Only one species grows wild in the Czech Republic, the English yew (Taxus baccata), which is a strictly protected, endangered tree – yet also one of the most popular trees in parks and gardens.

**Yew (Taxus)** is a genus of evergreen coniferous trees and shrubs in the yew family (Taxaceae), known for its extreme longevity, shade tolerance and high toxicity. Only one species grows wild in the Czech Republic: the **English yew (Taxus baccata)**, legally protected as an endangered species, yet among the most commonly planted trees in parks, cemeteries and gardens. Unlike most conifers, it does not produce cones – its seeds are enclosed in a fleshy red aril.

## Yew at a glance

| Scientific name | Taxus (in the Czech Republic Taxus baccata L.) |
| --- | --- |
| Family | Yew family (Taxaceae), gymnosperms, order Pinales |
| Height | usually 5–15 m, exceptionally around 20 m; often shrubby and multi-stemmed |
| Lifespan | hundreds of years; the oldest individuals in Europe are estimated at over 1,000 years |
| Needles | flat, 1–3.5 cm long, soft, glossy dark green above, paler beneath, arranged in two rows on side shoots |
| Flowering | March–April; dioecious (separate male and female plants) |
| Fruit | dark seed enclosed in a fleshy red aril, ripening August–October |
| Occurrence in Czechia | scattered on rocky slopes, in ravines and on scree, mainly in hilly country and foothills; widely planted |
| Protection | specially protected, endangered species (Decree No. 395/1992 Coll.); protection applies to wild populations |

## How to identify yew

Among native [conifers](https://www.stromyvcr.cz/en/conifers/), yew is easy to recognise. It is best identified by a combination of the following features:

- **Needles** are flat, soft and not prickly, with a short stalk-like base and an abruptly pointed tip. They are spirally arranged on the shoot, but on side shoots they twist into two rows, giving the twig a flat look. Underneath they lack the conspicuous white stripes of [fir](https://www.stromyvcr.cz/en/fir-abies/), showing only two dull pale green bands.
- **Bark** is thin, reddish-brown to greyish-brown, peeling in thin scales or plates that reveal reddish patches beneath. Older trunks are often furrowed and fluted, frequently formed from several fused stems.
- **Crown** is sparse and irregular in forest shade, but dense, broadly ovoid to conical in the open, often multi-stemmed. Crown shape is therefore not a reliable identification feature.
- **Seeds with red arils** are borne only by female plants. The aril is cup-shaped and open at the top, so the dark seed is visible inside. It is neither a berry nor a cone.
- **Male cones** are tiny, globular and yellowish, on the underside of last year's shoots; in spring they release clouds of pollen.
- The wood and bark **contain no resin**, so the tree does not "bleed" when wounded like [spruce](https://www.stromyvcr.cz/en/spruce-picea/) or [pine](https://www.stromyvcr.cz/en/pine-pinus/).

## Yew species worldwide and in the Czech Republic

According to current taxonomy, the genus Taxus comprises roughly **10–15 species**; they are hard to delimit because they differ only in minor characters, and some authors merge them. They are distributed across the temperate Northern Hemisphere – Europe, North Africa, south-west Asia, East Asia and North America. The only species that reaches slightly across the equator in the tropics is *Taxus sumatrana* from the mountains of South-East Asia (Sumatra, Sulawesi, the Philippines). The genus's centre of distribution is therefore certainly not in Indonesia, as is sometimes mistakenly claimed.

### Species you may encounter in Czechia

- **English yew (Taxus baccata)** – the only native species in Central Europe, ranging from Ireland and the Pyrenees to the Caucasus and northern Iran.
- **Japanese yew (Taxus cuspidata)** – from East Asia, very frost-hardy, needles yellowish beneath and sharply pointed. Grown in parks.
- **Anglo-Japanese yew (Taxus × media)** – a hybrid of English and Japanese yew; very common in garden centres (e.g. the columnar cultivar 'Hicksii'), popular for hedging.
- **Pacific yew (Taxus brevifolia)** – a North American species famous for the discovery of the anti-cancer compound paclitaxel; in Czechia only in collections.

## Where yew grows and its ecology

English yew is rare in Czech forests, though it used to be more common. It grows scattered, as single trees or small groups, most often on **shady rocky slopes, in canyon-like valleys, ravines and on scree**, usually from hilly country to the foothills. It prefers calcareous or at least nutrient-rich bedrock (limestone, basalt, phonolite) but also occurs in sandstone areas. It typically accompanies [beech](https://www.stromyvcr.cz/buk/), fir, maples and limes in scree and beech forests.

It is an exceptionally **shade-tolerant tree** – it can survive for decades in the understorey, waiting for a gap in the canopy. It needs humid air and suffers from prolonged drought and clear-felling.

### Why it declined in Czech forests

- **Overexploitation** – in the Middle Ages and early modern period, yew wood was exported on a massive scale for bow-making; many Central European populations were virtually exhausted.
- **Deliberate removal** – because it is poisonous to horses and cattle, farmers cleared yew from woods and pastures.
- **Browsing by game** – roe and red deer are relatively resistant to the poison and eat young yews; today this is the main obstacle to natural regeneration.
- **Changes in forestry** – even-aged spruce and pine monocultures managed by clear-felling do not suit it.

Seeds are dispersed mainly by birds (thrushes), which swallow the whole aril; the seed passes through the gut intact and the poison is not released. Seeds often germinate only in the second year.

## Toxicity: what is dangerous and what is not

Yew is among the most poisonous native trees. Its needles, bark, wood and seeds contain **taxine alkaloids**, which affect the heart and can cause cardiac arrhythmia or even cardiac arrest. **The only non-poisonous part is the fleshy red aril**; the seed inside, however, is toxic, so eating the fruit is not recommended – especially for children.

- **Horses** are highly sensitive; even a small handful of needles can be fatal. Yew is also dangerous to cattle, sheep and goats.
- Dogs and cats are also at risk if they chew twigs or clippings.
- Never give hedge clippings to animals or dump them on pastures.

If human poisoning is suspected, contact a doctor or a poison information centre immediately.

## Wood and uses

Yew wood is **heavy, hard and dense, yet very elastic**. It has a narrow pale sapwood and a striking reddish-brown heartwood, contains no resin canals and is highly durable. Since time immemorial it has been used for:

- **bows** – the classic English longbow was made from yew, with the elastic sapwood forming the back and the strong heartwood the belly; Ötzi the Iceman carried a yew bow more than 5,000 years ago,
- turned and carved objects, marquetry, musical instruments and small furniture parts,
- historically also axles, pegs and other parts under stress.

Today yew is also important in **medicine**. **Paclitaxel (Taxol)**, a chemotherapy drug used to treat ovarian, breast and lung cancer, was isolated from the bark of Pacific yew. Because harvesting bark would destroy populations, it is now produced semi-synthetically from compounds in English yew needles or biotechnologically from cell cultures.

## Growing yew in the garden

Yew is one of the most versatile ornamental trees. It tolerates shade, pruning and urban conditions and lasts for decades. Nursery plants are not subject to the protection of wild populations – but taking yews from the wild is prohibited.

### Site and soil

- **Light:** from full sun to deep shade; young plants do better in partial shade and protected from winter sun, which can scorch the needles.
- **Soil:** free-draining, humus-rich, preferably calcareous to neutral. It cannot tolerate waterlogging or heavy compacted soils – standing water leads to root rot.
- **Moisture:** appreciates humid air; water during dry spells in the first years after planting.

### Planting and care

- Plant in spring (April–May) or late summer (August–September); container-grown plants can be planted throughout the growing season except in extreme heat.
- For a hedge, plant 3–4 plants per metre.
- Yew **tolerates pruning extremely well** and regrows even from old wood, which is unusual among conifers. This makes it ideal for topiary, mazes and formal hedges. It is usually clipped in summer, with an optional second cut in late August.
- It grows slowly – roughly 10–30 cm a year depending on conditions and cultivar.
- Light feeding is enough, ideally with compost in spring.

### Popular cultivars

- **'Fastigiata'** (Irish yew) – narrowly columnar, dark green, a female clone.
- **'Fastigiata Aurea'** – columnar with yellow-edged needles.
- **'Repandens'** – low and spreading, good as ground cover in shade.
- **'Summergold'** – broadly spreading with golden needles.
- **Taxus × media 'Hicksii'** – faster-growing, columnar, ideal for hedges.

### Pests and diseases

- **Vine weevil (Otiorhynchus sulcatus)** – the adult beetle notches the needles and its larvae damage the roots; biological control with nematodes is effective.
- **Yew gall midge (Taxomyia taxi)** – forms galls resembling tiny artichokes at shoot tips; usually harmless.
- **Scale insects** – on twigs, especially on weakened plants.
- **Phytophthora root rot** – the main cause of yew death on waterlogged soils.

## Curiosities and cultural significance

- The yew was a sacred tree for the Celts and Germanic peoples, associated with death and rebirth. British churchyards hold yews estimated at more than a thousand years old – though precise dating is difficult because old trunks are often hollow.
- One of the best-known Czech yews is the **Krompach Yew** in Krompach in the Lusatian Mountains (northern Czech Republic), often cited as one of the oldest trees in the country.
- The species epithet *baccata* means "berry-bearing", although botanically it is not a berry.
- According to one theory, the genus name Taxus derives from the Greek *toxon* (bow), which is also the root of the word "toxic".
- Yew is one of the few conifers able to produce new stems from root buttresses and stumps.

## Summary

Yew is a slow-growing, shade-tolerant and exceptionally long-lived conifer with flat, soft needles and seeds set in a red aril. All its parts except the aril are poisonous. In the wild in the Czech Republic, English yew is rare and protected, while in gardens it is one of the most reliable trees for shady spots and formal hedges. Its springy wood once decided battles; today its compounds help treat cancer.

## FAQ

**Is yew poisonous?**

Yes. The needles, bark, wood and seeds contain toxic taxines that affect the heart. Only the fleshy red aril is non-poisonous, but the seed inside it is toxic.

**Is yew protected in the Czech Republic?**

English yew is specially protected as an endangered species under Decree No. 395/1992 Coll. Protection applies to wild-growing plants; nursery-grown plants can be cultivated freely.

**How fast does yew grow?**

Yew grows slowly, usually 10–30 cm a year depending on site and cultivar. The hybrid Taxus × media grows somewhat faster than English yew.

**How long do yews live?**

Commonly hundreds of years, and the oldest European specimens are estimated at over a thousand years. Exact age is hard to determine because old trunks are often hollow.

**When and how should a yew hedge be trimmed?**

Ideally in summer, with an optional second trim in late August. Yew regrows well even from old wood, so it tolerates hard rejuvenation pruning.

**Why doesn't yew have cones?**

Instead of cones, members of the yew family produce single seeds enclosed in a fleshy aril that attracts birds to disperse them. Only the tiny male pollen cones resemble cones.