Starhorn is a fast-growing aquatic or riparian plant from the acanthus family, widely grown in tropical aquariums and water gardens. It thrives in bright light and nutrient-rich water, and is easily propagated from cuttings.
Family
Acanthaceae (Acanthus family)
Light
Full sun, Bright indirect
Water
Grow it submerged in an aquarium or pond, or emerged with its roots in moist, waterlogged soil.
Soil
Nutrient-rich substrate or compost in water, with iron-rich fertiliser for good colour.
Temperature
20–30 °C; protect below 15 °C
How easy
Easy
Native range
Indo-China, Philippines
Climate
wet tropical
About
Hygrophila corymbosa, commonly known as temple plant, starhorn or giant hygro, is a riparian plant in the acanthus family.
Synonyms - Nomaphila corymbosa
How to grow it
Hygrophila corymbosa is a fast-growing plant that can be frequently trimmed back. It prefers a well-lit situation, a nutrient-rich water and compost, and benefits from additional CO2. If it is allowed to grow out of the aquarium, it will bear purple scented flowers, often causing the lower leaves to drop. The plant is adaptable to a variety of water conditions.
There are several forms in the aquarium trade such as red, siamensis compacta and many others, that seem to be mainly ecological variants, colour variation depends upon illumination, and the amount of iron available.
Where it grows
It is indigenous to selected countries of Southeast Asia like Malaysia, Thailand, Singapore, Indonesia, and India.
Text excerpted from the Wikipedia article Hygrophila corymbosa 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.