Daylilies thrive in well-drained, fertile soil, but tolerate poorer soils and heavy clay. Avoid planting in heavy shade and borders that dry out in summer.
Planting and care
Before planting container-grown daylilies, improve the soil structure and moisture-retention by digging in well-rotted organic matter, such as garden compost or manure. The same materials can also be used as a mulch around existing plants in spring to help conserve moisture.
Where growth is unsatisfactory, apply a general-purpose fertiliser, such as Growmore, in spring at 50-70g per square metre (1½-2oz per square yard).
Daylilies bought in packets
Bare-root daylilies are often sold in packets at garden centres. These can produce good plants, but need more care initially. Check the plants in the packet are firm and you can see buds or small shoots. Avoid those with long pale shoots.
Pot them up, rather than planting directly in the ground, using a peat-free multi-purpose compost and water well. Place pots in a cold frame or cold greenhouse and keep the compost moist.
Once they are growing strongly, plant out, ideally, in spring or autumn.