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 hardy hibiscus in your garden!
PLANTING
- Plants can be purchased from nurseries or started from seed.
- Seeds can be sown indoor 12 weeks before the last spring frost.
- Soak seeds in warm water for one hour before sowing.
- Seeds can also be sown outdoors after the last expected frost date.
- Plant the hibiscus where it is not exposed to strong winds to avoid breakage of the long stems.
- Space plants 2 to 3 feet apart.
- Mature plants can be divided in the spring
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