When to plant Eucalyptus?

Eucalyptus gunnii thrives in full sun and needs a sheltered, warm position outdoors during the growing season. Because it is not reliably winter-hardy in most of temperate Europe, grow it in a large container rather than planting it in open ground. Choose a pot at least 40–50 cm in diameter with excellent drainage holes; terracotta is ideal as it allows the roots to breathe. Use a loam-based or soil-based compost mixed with sharp sand or grit to improve drainage—eucalyptus will not tolerate waterlogged roots. A mix of two parts loam-based compost (such as John Innes No. 3) to one part horticultural grit works well. Fill the pot to within a few centimetres of the rim, firm the compost gently, and plant your eucalyptus so the root ball sits at the same depth it was growing in its nursery pot. Avoid burying the stem. The best time to plant is in May or June, once the risk of late frosts has passed and temperatures are reliably mild. After planting, water thoroughly to settle the compost around the roots, then allow the surface to dry slightly before watering again. Place the container in the sunniest, most sheltered spot you have—against a south-facing wall is ideal. Eucalyptus grows quickly and can become top-heavy, so consider staking young plants with a sturdy cane to prevent wind damage. A light mulch of gravel or bark on the compost surface helps retain moisture and keeps the root zone cool. Avoid planting in heavy clay or poorly drained soil, even in containers, as this will lead to root rot.