California Bluebell in Zone 9a & 9b
Phacelia campanularia
When to plant california bluebell in zone 9b
Zones 9a and 9b share the same average frost dates in our data, so this page covers both.
Method: Direct sow: Direct-sow outside. California Bluebell doesn't transplant well, or doesn't need the extra time indoors.
| Start indoors | Not typically started indoors |
|---|---|
| Direct sow / transplant outside | Feb 15–Feb 22 |
| Estimated bloom | Apr 26–May 3 (~70 days after direct-sowing) |
Spacing: 2 per square foot (square-foot-gardening spacing). Mature height: 1-2 ft.
California bluebell is a desert native that flowers hard for about a month and then finishes, which makes it a spring crop rather than a summer one.
How california bluebell fits zone 9's season
Zone 9b's frost-free window runs about 293 days, from February 15 to December 5. California Bluebell needs about 70 days from sowing to first harvest.
Good companions
No standout companions recorded yet for California Bluebell.
Where to buy california bluebell seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing california bluebell" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 9b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing California Bluebell in USDA zone 9b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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