If their strange tubers got into the garden last autumn, ranunculus should be blooming by now. Although their schedule suggests that they crave winter chill like other spring bulbs, they merely want to disperse their roots early. Then, they can bloom as winter ends, and continue until spring weather gets too warm for them. They mostly finish prior to summer.
If tubers did not get into the garden earlier last autumn, young ranunculus plants become available from nurseries late in winter. Although generally a spring annual, tubers, which go dormant by summer, have potential to regenerate perennially for subsequent springs. Digging and storing tubers through most of their dormancy might improve their potential.
Ranunculus bloom can be pink, red, orange, yellow, purple, cream or white. Flowers are plump and neatly dense with many papery petals, like little peony flowers. They stand on sturdy stems about half a foot to a foot high. Their finely textured basal foliage resembles parsley, but with a lighter color. Dormant tubers are tufts of short, plump and woody roots.