HP.A4.1 General
general - spread grades
Due to the non-woody character of most herbaceous plants and their rapid growth from a healthy and vigorous root system, the dimensions of the aerial parts are less significant in plant specification. However, where evergreen herbaceous plants are used for ground cover, the spread of the plant may be specified. The following gives some indication of overall spread for various species but these have not been sufficiently tested to include in Section 2 of this document.