How to grow hardy hibiscus

When to plant hardy hibiscus

Plant hardy hibiscus in spring. Clemson says seed can be sown in place outdoors after the last expected frost and that perennial hibiscus can be divided in spring, and to cut old stems back to three to six inches in late winter or early spring. It does not tolerate fall division or transplanting.

Hardy Hibiscus is timed by season rather than your frost dates, so the planting calendar does not generate ZIP-specific dates for it. Check the cited sources below to fine-tune for your area.