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Aquarius horizontalis

Aquarius horizontalis
Photo: The New York Botanical Garden, CC BY 4.0

Aquarius horizontalis (also called Echinodorus horizontalis) is an aquatic plant from northern South America, grown mainly in aquariums and wet tropical setups. It needs a rich, deep substrate, soft slightly acidic water, warm temperatures and plenty of light.

Family
Alismataceae (Alismat family)
Grows as
Aquatic
Light
Full sun, Bright indirect
Water
Grow it submersed or emersed in soft, slightly acidic water kept constantly wet.
Soil
Deep bed of rich aquarium substrate.
Temperature
Tropical, warm water; about 24–28 °C suits it well.
How easy
Hard
Native range
S. Trop. America
Climate
wet tropical

About

Aquarius horizontalis or Echinodorus horizontalis is a species of plant in the Alismataceae family. It is native to northern South America (Venezuela, Colombia, Guyana, Ecuador, Peru, northern Brazil).

How to grow it

The plant needs a deep bed of rich substrate, and plenty of light and water on the more acidic and soft side, and tropical temperatures. It will grow well emersed or submersed. Propagation is mainly by adventitious plantlets, which form on the inflorescence. A rather demanding species, it is now rarely seen.

The flowers, normally emersed, open in the later morning hours only for about 2 hours. After this, it closes completely. E. horizontalis opens its flowers even under water. The plant is self-fertile.

Other Aquarius plants

Creeping Burhead · Aquarius palifolius · Aquarius uruguayensis · Echinodorus bracteatus · Echinodorus emersus · Echinodorus grandiflorus · Echinodorus grisebachii · Echinodorus longiscapus · Echinodorus macrophyllus · Echinodorus reptilis · Echinodorus subalatus

Text excerpted from the Wikipedia article Aquarius horizontalis 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.

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