California Poppy in Zone 3a & 3b
Eschscholzia californica
When to plant california poppy in zone 3b
Zones 3a and 3b share the same average frost dates in our data, so this page covers both.
Method: Direct sow: Direct-sow outside. California Poppy doesn't transplant well, or doesn't need the extra time indoors.
| Start indoors | Not typically started indoors |
|---|---|
| Direct sow / transplant outside | May 16–May 23 |
| Estimated bloom | Aug 4–Aug 11 (~80 days after direct-sowing) |
Spacing: 2 per square foot (square-foot-gardening spacing). Mature height: 0.5-1 ft.
California poppy is a direct-sow-only flower, and not because it's fussy. It's the opposite, thriving on neglect once it's in the ground. It stays under a foot tall, silky cup-shaped orange or yellow blooms over finely cut, blue-green ferny foliage. The catch is that the seed needs light to germinate, so anyone used to burying seed a half-inch deep will bury this one right out of viability.
How california poppy fits zone 3's season
Zone 3b's frost-free window runs about 98 days, from May 30 to September 5. California Poppy needs about 80 days from sowing to first harvest.
Good companions
No standout companions recorded yet for California Poppy.
Where to buy california poppy seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing california poppy" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 3b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing California Poppy in USDA zone 3b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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