Lisianthus in Zone 11a & 11b
Eustoma grandiflorum
When to plant lisianthus 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. Lisianthus needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Oct 2–Oct 9 |
|---|---|
| Direct sow / transplant outside | Jan 8–Jan 15 |
| Estimated bloom | Jun 7–Jun 14 (~150 days after transplanting) |
Spacing: 2 per square foot (square-foot-gardening spacing). Mature height: 1-3 ft.
Lisianthus produces some of the most sought-after cut flowers in the trade, rose-like blooms with a vase life that outlasts most annuals by a wide margin. It also has a reputation, one the seed source itself doesn't try to soften, as difficult to grow from seed.
How lisianthus 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 Lisianthus.
Where to buy lisianthus seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing lisianthus" 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 Lisianthus in USDA zone 11b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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