What is the best way to grow rhododendrons and azaleas?
Azaleas are species of rhododendrons, so both are cared for in roughly the same way. They need lime-free soil or compost; if your soil is alkaline they can be grown in pots of ericaceous compost. The soil also needs to be rich in humus – leafmould is best – moisture retentive, but not soaking in winter. Generally, they prefer a site that is part shaded, and one that is especially out of hot, direct sunlight. In summer you must make sure they don’t dry out at the roots or they won’t set flower buds for the following year. Feed in spring with a balanced fertiliser then again in summer with a high potash one. Usually no pruning is needed but tall shoots can be cut back immediately after flowering if they are getting too large.
