Sparkler White spider flower (Cleome hassleriana 'Sparkler White') begins blooming at about 18 inches in height and continues to grow and bloom along its length throughout summer. The pure-white blooms of 'Sparkler White' are 4 to 6 inches wide, with long stamens. The leaves are palmate and glandular, releasing an odd scent somewhere between lemon and skunk. Given optimal soil conditions, this plant may grow up to 4 feet tall! The straight species can easily reach double this size. This is a free reseeder, and a butterfly and hummingbird magnet with thorny stems that defend it against deer and rabbit damage. Once the roots are established, spider flower thrives on heat and drought.