This adaptable native plant produces huge flowers (as much as 12" across) and is both reliable and beautiful. Flowers open green, then mature to white before turning green at the end of their life cycle. Very cold hardy Incrediball blooms on new growth so even very cold winters won't keep it from blooming. The flowers are held upright on very sturdy stems, so they don't flop like 'Annabelle' will. Prune back in late winter to encourage strong new growth and flowering. Flower colour is not affected by soil pH.