| We tested for differences in male cyathia production between annuals and perennials. |
| Most perennials are adaptable to sun or shade, various soil and water conditions. |
| The Flower Garden near the Orchid House is laid out with beds of flowering annual and perennials. |
| My worst weeds are the perennials that spread with runners, like quack grass. |
| One group of plants that stands out conspicuously are those lofty and lanky woody perennials, the trees and shrubs. |
| As well as bedding plants, Mrs Malkinson grows a range of herbaceous perennials and alpines which are displayed at her front door. |
