Cranberry Hibiscus in Zone 9a & 9b
Hibiscus acetosella
When to plant cranberry hibiscus in zone 9b
Zones 9a and 9b share the same average frost dates in our data, so this page covers both.
Method: Start indoors: Start indoors from seed, then transplant outside. Cranberry Hibiscus needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Dec 28–Jan 4 '27 |
|---|---|
| Direct sow / transplant outside | Feb 22–Mar 1 |
| Estimated bloom | Jun 2–Jun 9 (~100 days after transplanting) |
Spacing: about 4 square feet per plant (square-foot-gardening spacing). Mature height: 3.5-6 ft.
Cranberry hibiscus, also called false roselle, is grown for its deep burgundy foliage rather than for its actual hibiscus flowers, prized in floral arrangements as a dramatic, colorful cut foliage.
How cranberry hibiscus fits zone 9's season
Zone 9b's frost-free window runs about 293 days, from February 15 to December 5. Cranberry Hibiscus needs about 100 days from transplant to first harvest.
Good companions
No standout companions recorded yet for Cranberry Hibiscus.
Where to buy cranberry hibiscus seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing cranberry hibiscus" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 9b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Cranberry Hibiscus in USDA zone 9b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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