Phormium tenax

Plant in any soil as long as it can be kept moist during the warm summer months. It is best not to feed these plants as it will generate soft growth that can be killed in the winter months. If growing outdoors, offer winter protection in cold regions using horticultural fleece or bracken. If planting in containers, select pots which offer good drainage and provide a saucer that can be kept topped up with water during hot, dry spells.

Divide in spring, making sure that each piece of root has 4-5 strong leaves. Using a fork dig up plant, try to keep the root ball as complete as possible. Split the root ball at the centre with a sharp knife or a spade. Replant the plants to the same depth as the original and keep well watered until established. Alternatively, sow seeds in spring under glass and grow on in individual pots under cover. Plant out the following spring.