Our greenhouse offers a full line of hardy perennials that add flair and a splash a colour through flowers and foliage to any garden. Let our experienced greenhouse staff help you select the perfect mix of perennials your garden a beautiful array of colours and textures. From a small backyard to large commercial sites, we can supply quality stock for any project. A perennial is defined as a plant that recurs or seems to recur on a yearly or continual basis. This means they will die back to the ground every winter but come back every spring.