Butterfly Sweetpea Blend Lathyrus odoratus. Each creamy white petal is edged and mottled with a darker colour - scarlet, blue, salmon-rose, lilac, purple, and chocolate. Butterfly Blend sweet pea seeds are one of our most unique and beautiful varieties. This is a very nice climbing variety that works well with a trellis or plant net. Plants grow to a height of 120cm (48") or more. Sweet peas grown for cut flowers work particularly well against a really solid support like a chain link fence or chicken wire stretched out on a frame of some kind. For the longest bloom period, be sure to remove all spent flowers as you see them.Annual