Ranunculus Plant. The best time to plant ranunculus corms is in late summer to early winter. Common ranunculus varieties include persian buttercups, clooney tango, and hanoi, all of which perform well in usda plant hardiness zones eight to 11;
One of the few ranunculus species that may grow submersed, r. Plant them where they get 6+ hours of sun in cooler regions and afternoon shade in hotter regions. This plant will provide nectar and pollen for bees and the many other types of pollinating insects.