Often called border perennials, these are plants which give great colour, change and movement in the garden through the year. They don't have a permanent woody structure like shrubs and trees, but many are evergreen, giving winter interest. They are most often associated with the 'cottage garden' style and when planted in a mixed border, a greater mix of textures, colour and heights can be achieved. The range is enormous with choices for most garden positions, sun, shade, damp, dry. Heights vary also from 20cm to 240cm(8" to 8').