Common periwinkle puts on new growth all year, so it can be successfully rooted indoors year-round. However, it performs best when started in midspring when growth is most vigorous.
Is periwinkle easy to grow?
This broad-leaf evergreen plant grows easily and periwinkle care most often involves keeping the prolific spreader in check. Periwinkle, once established, is drought resistant and needs little other care if properly sited in the landscape.
Does periwinkle root in water?
Periwinkle plant propagation takes only 18 days for the roots to appear. The stem cuttings are used to propagate in both soil and water.