Salvia (Scarlet Sage) in Zone 9a & 9b
Salvia splendens
When to plant salvia (scarlet sage) in zone 9b
Zones 9a and 9b share the same average frost dates in our data, so this page covers both.
Method: Start indoors: Start indoors from seed, then transplant outside. Salvia (Scarlet Sage) needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Dec 21–Dec 28 |
|---|---|
| Direct sow / transplant outside | Mar 1–Mar 8 |
| Estimated bloom | May 20–May 27 (~80 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 1-1.5 ft.

Salvia (scarlet sage) is a long-season bloomer that doesn't quit. Once established it flowers steadily from late spring until frost, which makes it one of the more reliable season-long pollinator draws in the garden. The flowers themselves are narrow, upright spikes of tubular blooms, usually red, packed onto 1.5- to 3-foot plants.
How salvia (scarlet sage) fits zone 9's season
Zone 9b's frost-free window runs about 293 days, from February 15 to December 5. Salvia (Scarlet Sage) needs about 80 days from transplant to first harvest.
Good companions
No standout companions recorded yet for Salvia (Scarlet Sage).
Where to buy salvia seeds
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See it growing
Search YouTube for "growing salvia (scarlet sage)" 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 Salvia (Scarlet Sage) in USDA zone 9b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.
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