Odontonema cuspidatum
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Odontonema cuspidatum

Scarlet firespike · Cardinal's-crest · Cardinal-flower · Cardinal-spear · Mottled toothedthread

Tier 2 Difficulty: medium Water: low Light: full_sun
Temperature
20–37 °C
Soil pH
6–7
Hardiness
Zone 9–11
Click count
288
Observations
817

Description

Source: leafsnap

Odontonema cuspidatum, commonly known as Firespike, is a tropical evergreen shrub that belongs to the Acanthaceae family. Native to Central and South America, this plant can grow up to 6 feet tall. Its glossy, dark green leaves are lance-shaped and can reach up to 8 inches in length. The plant produces bright red or pinkish-red tubular flowers, which are densely packed into spikes at the ends of the stems. Firespike is a popular ornamental plant, admired for its attractive foliage and striking flowers that bloom from late summer through fall. It prefers partial shade or filtered sunlight but can also thrive in full sun if provided with adequate moisture. Firespike requires well-draining soil and regular watering during dry periods. The plant attracts hummingbirds, butterflies, bees, and other pollinators with its nectar-rich flowers. It can be propagated through stem cuttings or seeds but may require pruning after flowering to promote optimal growth. Traditionally, Firespike has been used for medicinal purposes, such as treating fever, throat inflammation, or mouth ulcers, due to its antibacterial properties. Extracts from its leaves have been shown effective against Staphylococcus aureus bacteria strains, among others, in some studies of its phytochemical constituents. However, it should be noted that further research is needed to provide conclusive recommendations regarding the medicinal use of this plant species.

Care Guide

💧 Water
☀️ Light Full sun
Ideal: Full sun
🌡️ Temperature 20–37.8°C
Ideal temperature: 20–37.8°C
💨 Humidity
Humidity:
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer
🪴 Pot & Repot
✂️ Pruning
🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Herb, Shrub
Life Cycle
Perennial
Genus
Odontonema
Family
Acanthaceae
Hardiness Zone
9-11
Mature Height
1.22 m to 1.83 m
Mature Spread
0.61 m to 1.22 m
Leaf Color
Green
Leaf Type
Evergreen
Flower Color
Red
Flower Size
2.54 cm to 5.08 cm
Bloom Time
Mid summer, Late summer, Fall
Planting Time
Spring, Autumn
Harvest Time
Fall, Early winter, Mid winter
Native Area
Honduras, Mexico, Guatemala

Tags (6)

Common Names (7)

en Scarlet firespike
en Cardinal's-crest
en Cardinal-flower
en Cardinal-spear
en Mottled toothedthread
en Firespike
en Cardinal’s guard