Odontonema cuspidatum is a shrub or subshrub from Central America and southern Mexico, grown for its tall spikes of scarlet tubular flowers. It thrives in warm, humid conditions and is best grown in a sheltered spot with some shade from strong afternoon sun.
Family
Acanthaceae (Acanthus family)
Grows as
Shrub
Light
Part shade, Bright indirect
Water
Keep the soil evenly moist during the growing season and let the top layer dry slightly between waterings.
Soil
Rich, well-drained loam or peat-based potting mix.
Temperature
18–30 °C; protect below 10 °C
How easy
Easy
Native range
C. & S. Mexico to Honduras
Climate
wet tropical
About
Odontonema cuspidatum, the mottled toothedthread, the Cardinal's guard, or the firespike, is a species of plant in the family Acanthaceae which is endemic to Mexico, but has been introduced to Florida, Central America, South America, the West Indies, and several Pacific Islands.
[Contains information from Leaf Area Index (LAI) and Heritage Trees from data.gov.sg (National Parks Board), made available under the terms of the Singapore Open Data Licence version 1.0]
Text excerpted from the Wikipedia article Odontonema cuspidatum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.