Scarlet Flax in Zone 7a & 7b
Linum grandiflorum
When to plant scarlet flax in zone 7b
Zones 7a and 7b share the same average frost dates in our data, so this page covers both.
Method: Direct sow: Direct-sow outside. Scarlet Flax doesn't transplant well, or doesn't need the extra time indoors.
| Start indoors | Not typically started indoors |
|---|---|
| Direct sow / transplant outside | Apr 10–Apr 17 |
| Estimated bloom | Jun 19–Jun 26 (~70 days after direct-sowing) |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 1-1.5 ft.
Scarlet flax is a wispy annual whose individual flowers last a single day. The plant compensates by producing a great many of them.
How scarlet flax fits zone 7's season
Zone 7b's frost-free window runs about 198 days, from April 10 to October 25. Scarlet Flax needs about 70 days from sowing to first harvest.
Good companions
No standout companions recorded yet for Scarlet Flax.
Where to buy scarlet flax seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing scarlet flax" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 7b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Scarlet Flax in USDA zone 7b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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