Grow California Giants Zinnias for huge summer color! This mix has been expertly crafted to produce a balanced blend of white, orange, and yellow flowers along with bold pink, red, and purple blooms. With long-lasting 4-5 inch flowers on tall heat-loving plants, California Giants truly stand out from other Zinnia varieties. In addition to being a great cut flower, these are especially attractive to butterflies, who love to rest on the large blooms for a sip of nectar! Annual.