Impatiens in Zone 11a & 11b
Impatiens walleriana
When to plant impatiens in zone 11b
Zones 11a and 11b share the same average frost dates in our data, so this page covers both.
Method: Start indoors: Start indoors from seed, then transplant outside. Impatiens needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Oct 23–Oct 30 |
|---|---|
| Direct sow / transplant outside | Jan 15–Jan 22 |
| Estimated bloom | Mar 31–Apr 7 (~75 days after transplanting) |
Spacing: 2 per square foot (square-foot-gardening spacing). Mature height: 0.5-2 ft.
Impatiens flowers reliably in shade, which almost nothing else here does. It also carries a disease problem worth understanding before you plant a whole bed of it.
How impatiens fits zone 11's season
Zone 11b is frost-free in this dataset, so frost is not what limits the calendar here. What you can plant, and when, comes down to summer heat and daylength instead.
Good companions
No standout companions recorded yet for Impatiens.
Where to buy impatiens seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing impatiens" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 11b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Impatiens in USDA zone 11b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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