Calea ternifolia
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Calea ternifolia

Mexican calea · Bitter-grass · Dog-grass

Tier 2 Difficulty: medium Water: low Light: partial_sun
Temperature
20–37 °C
Soil pH
6–7
Hardiness
Zone 9–11
Click count
5
Observations
4

Description

Source: wikipedia (CC BY-SA)

Calea ternifolia is a species of flowering plant in the aster family, Asteraceae. It is native to Mexico and Central America. Its English language common names include bitter-grass, Mexican calea, and dream herb.

Care Guide

💧 Water

Mexican calea flourishes in tropical climates, requiring consistent moisture and well-drained, hydrated soil. For optimal growth, water it weekly. As an indoor herbaceous plant, it thrives in humidity levels that mimic its natural environment, enhancing both its appearance and potential therapeutic benefits.

☀️ Light Partial sun

Mexican calea naturally grows in habitats like forest understories or rocky areas, where it is exposed to natural shade. It favors partial sun but can tolerate full sun or full shade, showing its versatile and hardy nature.

Ideal: Partial sun
🌡️ Temperature 20–37.8°C

Mexican calea comes from tropical areas where the climate is generally warm and humid. Consequently, it is well suited to high temperatures and humidity. It does not tolerate sudden temperature changes and prefers a stable thermal environment, so avoiding temperature fluctuations indoors is important. It typically cannot withstand cold and needs warmer conditions to grow. If the ambient temperature falls too low, the plant may stop growing or even die.

Ideal temperature: 20–37.8°C
💨 Humidity
Humidity:
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer

Mexican calea needs the most fertilizer during its active growth period, which takes place mainly in spring, summer, and early fall. Fertilization supplies essential nutrients that the soil might be lacking and encourages healthy root and stem growth, as well as the attractive foliage that is a key characteristic of this plant.

🪴 Pot & Repot
✂️ Pruning

Mexican calea is a hardy perennial shrub with serrated leaves. To encourage growth, prune the dead branches from early to late spring. This practice improves air circulation and reduces the risk of disease. Be sure to use sharp, clean tools to keep the plant healthy.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Herb
Life Cycle
Perennial
Genus
Calea
Family
Asteraceae
Hardiness Zone
9-11
Mature Height
49 cm to 91 cm
Mature Spread
30 cm to 61 cm
Leaf Color
Green, Dark Green
Leaf Type
Deciduous
Flower Size
1.02 cm to 2.03 cm
Bloom Time
Summer, Early fall, Mid fall
Planting Time
Spring, Summer, Autumn
Harvest Time
Late summer, Fall, Early winter
Native Area
Colombia, Belize, Honduras, Mexico, Guatemala, El Salvador, Nicaragua, Costa Rica

Tags (6)

Common Names (3)

en Mexican calea
en Bitter-grass
en Dog-grass