The hardy perennial hibiscus, also called rose mallow or swamp rose, adds the beauty of a tropical hibiscus to the garden, but can withstand cold winter temperatures that kill the actual tropical varieties. Here’s how to grow hibiscus in your garden!
Mulch around the plant to retain moisture and to provide protection for the roots.
Water plants deeply and thoroughly.
To encourage re-bloom, remove old flowers before they form seed heads or prune plants back by one third after a flush of bloom is finished.
In early spring, remove dead stems from established plants and apply a balanced fertilizer.