general - seed - rootballed clumps - pot grown/plugs - bulbs, corms or tubers
Some wildflowers grow from perennating storage organs which can be used as a means of supply. As with other herbaceous perennials which grow similarly they can be specified as bulbs, corms and tubers and their specification using the same criteria as indicated in Section HP.B. Reference to that section will give details. Examples are Allium ursinum (Ramsons); Hyacinthoides non-scripta (Bluebell), Narcissus pseudonarcissus (Wild Daffodil).