When to plant Hawthorn?

Hawthorn thrives in full sun or partial shade and is remarkably unfussy about soil, tolerating clay, loam, and chalky conditions equally well. It's one of the most adaptable native trees for temperate gardens. Plant bare-root specimens in October, November, or March when the tree is dormant; container-grown plants can go in during the same months but establish best in autumn when the soil is still warm. Choose a site with plenty of space—mature hawthorns reach 4–8 metres tall with a spread of 3–6 metres, so plant at least 6 metres from buildings, boundaries, or other large trees unless you're creating a hedge, in which case space plants 30–50 cm apart. Dig a hole twice the width of the root ball but no deeper than the roots themselves. Break up compacted soil at the base and sides of the hole to encourage roots to spread. If your soil is very heavy clay, fork in some grit or coarse organic matter to improve drainage, though hawthorn tolerates wet conditions better than most trees. Position the tree so the soil mark on the stem sits level with the surrounding ground—planting too deep encourages stem rot. Backfill with the excavated soil, firming gently with your heel as you go to eliminate air pockets. Water thoroughly after planting, even in autumn or winter, to settle the soil around the roots. Apply a 7–10 cm layer of well-rotted compost or bark mulch in a circle around the base, keeping it clear of the trunk itself. Stake young trees with a single angled stake and a tree tie if the site is exposed, but hawthorn generally establishes well without support in sheltered gardens.