Alan Titchmarsh shares his five favourite perennial plants, in this short video from BBC Gardeners' World Magazine. Here's our list of top 20 perennials to grow, plus advice on how to buy and grow ...
Most perennials bloom profusely during a specific season, such as spring, mid-summer or fall. Peonies bloom in late May through early June, tall iris flower in mid-June, and garden phlox blossom ...