Spilanthes (Toothache Plant) in Zone 10a & 10b

Spilanthes oleracea

When to plant spilanthes (toothache plant) in zone 10b

Zones 10a and 10b share the same average frost dates in our data, so this page covers both.

Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Spilanthes (Toothache Plant) tolerates either.

Start indoorsDec 19–Dec 26
Direct sow / transplant outsideFeb 6–Feb 13
Estimated bloomApr 12–Apr 19 (~65 days after planting)

Spacing: 2 per square foot (square-foot-gardening spacing). Mature height: 0.5-1 ft.

Spilanthes (Toothache Plant)
Photo: Forest and Kim Starr via Wikimedia Commons, CC BY 3.0 us, cropped.

Spilanthes, commonly called the toothache plant, is grown as much as a novelty edible as an ornamental. Chewing a leaf or flower bud produces a genuine numbing, tingling sensation, traditionally used to ease tooth pain.

How spilanthes (toothache plant) fits zone 10's season

Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Spilanthes (Toothache Plant) needs about 65 days from sowing to first harvest.

Good companions

No standout companions recorded yet for Spilanthes (Toothache Plant).

Where to buy spilanthes seeds

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See it growing

Search YouTube for "growing spilanthes (toothache plant)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)

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Growing Spilanthes (Toothache Plant) in USDA zone 10b

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Growing Spilanthes (Toothache Plant) in USDA zone 10b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.

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