The blooms measure 2 inches across and have a super-packed, semi-double form that holds up well in garden or vase.This zingy green will reach its deepest lime tone if given partial shade, particularly in climates where summers are quite hot. If you prefer a more yellow-toned chartreuse, full sun is best. Either way, you will find these blooms distinctively different. Zinnias are one of the easiest annuals to grow, and attract butterflies to the garden. 30 seeds