Acmella oleracea

Toothache Plant

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A tropical herbaceous plant featuring bright yellow button-like flowers and reddish stems. Leaves contain spilanthol, which causes a numbing sensation, traditionally used as a natural toothache remedy. Compact growth habit suitable for pots or gardens.
yard Outdoor plants wb_sunny Half-shade / Sun pets Not pet-safe
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Plant Details

Common Name Toothache Plant
Family Asteraceae
Genus Acmella
Species Oleracea
Origin Tropical Asia / South America
Blooming Year-round in tropics, Summer to Autumn in temperate zones; bright yellow flowers.
Leaf Color Green with reddish veins and stems
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly close No
yard

Care & Maintenance

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Soil

Well-drained loamy soil enriched with organic matter

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Watering

Keep soil consistently moist but not waterlogged during active growth, reduce slightly in cooler months

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Sunlight & Care

Full sun is preferred for maximum flower production and leaf potency; tolerates partial shade in extreme heat

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Fertilization

Apply balanced liquid fertilizer every 2-3 weeks during growing season to support vegetative growth

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Pruning

Pinch back tips regularly to encourage bushiness; harvest leaves and flowers frequently for culinary or medicinal use

Pest Control Aphid Leaf Miner Spider Mite Whitefly

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 5 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
agriculture Harvesting Period 5 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 12 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
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Growing Parameters

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Temperature
59° – 100°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
45% – 75%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
1500 – 30000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
2000 – 4500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
20% – 70%
% volumetric
Water content in the growing medium
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Soil EC
300 – 1800
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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