Water parameters
Temperature20–28°C
pH5.5–7
General hardness (GH)2–10 dGH
Recommended range
Overview
Didiplis diandra is a fine-textured stem plant from the shallow waters of North America. Narrow, needle-like light green leaves are arranged in dense pairs along the stem; when many stems are planted together, it looks like a soft, dense hedge. This is where the name "water hedge" comes from. In strong light the shoot tips take on orange and red tones. Its stems are thin and brittle; when newly planted, it may stay dormant for a while.
Planting and Placement
- Stems are planted in bunches of 5–7, leaving 2–3 cm between bunches, 2–3 cm deep.
- It is used in the midground, at the base of stones and wood, or in front of background plants.
- It does not like being pulled up and replanted often; choose its spot carefully from the start.
Care and Fertilization
- Light: High; necessary for color and dense growth.
- CO₂: Not required, but clearly beneficial.
- Fertilizer: Iron and micronutrient supplementation; a nutrient-rich substrate is recommended.
- Trimming: Clipped from the top; regular trimming keeps the hedge look.
Propagation
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Common Problems
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Hobbyist notes
Things you won't find in books, learned by trial and error. The most helpful ones are on top.
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Change history and contributors
- Page created · October 16, 2026