Gomphrena (Globe Amaranth) in Zone 11a & 11b
Gomphrena globosa
When to plant gomphrena (globe amaranth) 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. Gomphrena (Globe Amaranth) needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Nov 13–Nov 20 |
|---|---|
| Direct sow / transplant outside | Jan 8–Jan 15 |
| Estimated bloom | Apr 8–Apr 15 (~90 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 1-2 ft.
Gomphrena (globe amaranth) grows a long taproot that gives it above-average drought tolerance once established, and it rewards that patience with one of the longest bloom windows of any flower on this list: April through October in a lot of climates. What look like its "flowers" are papery bracts, not petals, which is why cut stems hung upside down hold their color and shape for months in a dried arrangement instead of shattering the way true petals do.
How gomphrena (globe amaranth) 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 Gomphrena (Globe Amaranth).
Where to buy gomphrena seeds
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See it growing
Search YouTube for "growing gomphrena (globe amaranth)" 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 Gomphrena (Globe Amaranth) in USDA zone 11b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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