Commonly known as Creeping Zinnia, Sanvitalia 'Tsavo Yellow' is much daintier in size than actual zinnias and forms a nice compact mound of fresh green foliage dotted generously with bright yellow flowers. Growing less than a foot tall and up to a foot wide, 'Tsavo Yellow' is a natural along walkways in the garden, or planted in container planters or hanging baskets as a combination spiller-filler. Though allegedly hardy down to 0 degrees, sanvitalia is grown as an annual in the Pacific NW.