Yew in September: monthly care

Yew thrives in a remarkably wide range of positions, from full sun through partial shade to full shade, making it one of the most adaptable evergreen trees for temperate gardens. It tolerates loam, chalky soil and clay soil equally well, though drainage should be reasonable—avoid waterlogged ground. Plant bare-root or container-grown specimens between September and November or in March and April, avoiding frozen or waterlogged soil. Prepare the planting hole to roughly twice the width of the root ball but no deeper; the top of the root ball should sit level with the surrounding soil. Break up compacted soil at the base and sides of the hole to encourage root spread. If your soil is heavy clay, fork in some grit or coarse organic matter to improve structure, but yew is generally tolerant and doesn't demand rich conditions. Space plants 300 cm apart if you're planting a hedge or group; for a specimen tree, ensure adequate room for the mature spread of 3–8 metres. Backfill with the excavated soil, firming gently with your heel as you go to eliminate air pockets. Water thoroughly after planting, even in autumn, to settle the roots. Apply a 5–8 cm layer of well-rotted compost or bark mulch around the base, keeping it clear of the trunk itself to prevent rot. Stake young trees loosely if the site is exposed, using a short stake and flexible tie, but yew's slow, sturdy growth means staking is often unnecessary. Check the plant regularly through its first season and water during prolonged dry spells until established, typically after the first year.

Yew responds exceptionally well to pruning and can be shaped, clipped or renovated hard if necessary. The best times to prune are June and September. June pruning—after the spring flush of growth—keeps hedges and topiary neat through summer, while a second trim in September tidies growth before winter and avoids cutting into frosty weather. Avoid pruning outside these months, particularly in late autumn or winter, as wounds heal slowly in cold conditions. Use sharp, clean hedging shears or secateurs for small jobs, and a powered hedge trimmer for large hedges. For formal hedges, trim to a slight taper (narrower at the top) to ensure light reaches the lower branches and prevent bare patches. Yew tolerates clipping back into old wood better than most conifers, so if a hedge has become overgrown or bare at the base, you can cut back hard—even into brown, leafless stems—and it will regenerate over two to three seasons. Tackle one side in the first year, the other in the second, to avoid stressing the plant. For specimen trees, remove any dead, damaged or crossing branches in June, cutting back to a healthy side shoot or the main stem. Yew rarely needs thinning unless you want to create a more open structure. Always wear gloves: all parts of yew except the fleshy red aril are toxic. Clear up clippings promptly, especially if livestock or pets have access to the garden.