These ruby spider daylilies, a type of hardy perennial, are boldly blooming in an area garden. Ruby spider daylilies boast 9-inch blooms with wide, spoon-shaped crimson petals and a glowing golden throat. According to waltersgardens.com, the variety is a tetraploid hybrid, meaning it has extra chromosomes that give it greater vigor, richer color and larger flowers. True to their name, each bloom lasts just one day but the plant reblooms throughout early to mid-summer with full star power.