Spilanthes (Toothache Plant) in Zone 11a & 11b

Spilanthes oleracea

When to plant spilanthes (toothache plant) in zone 11b

Zones 11a and 11b 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 indoorsNov 20–Nov 27
Direct sow / transplant outsideJan 8–Jan 15
Estimated bloomMar 14–Mar 21 (~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 11's season

Zone 11b is frost-free in this dataset, so frost is not what limits the calendar here. What you can plant, and when, comes down to summer heat and daylength instead.

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)

← Back to the full zone 11b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →

Growing Spilanthes (Toothache Plant) in USDA zone 11b

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Growing Spilanthes (Toothache Plant) in USDA zone 11b: when to start seeds indoors, when to direct-sow, and when to expect a bloom.

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