Glossostigma Diandrum care guide
Glossostigma Diandrum (Glossostigma diandrum) — high light, 20-28 °C, pH 5.5-7, CO2 recommended.
Overview
Glossostigma Diandrum (Glossostigma diandrum) is an aquatic plant of the family Phrymaceae, listed in the Aquairi knowledge base as an intermediate-level species. It is typically grown under high light with pressurised CO2 injection on nutrient-rich aquasoil. A tiny carpeting plant closely related to the famous Glossostigma elatinoides but slightly easier to cultivate. Forms an extremely flat, dense carpet of small spoon-shaped leaves. Requires good light and nutrition but is more forgiving than its cousin.
Taxonomy
- Family: Phrymaceae
- Genus: Glossostigma
- Scientific name: Glossostigma diandrum
- Common synonyms: Glosso Diandrum
Habitat
Glossostigma is a small genus of Phrymaceae from wetlands of Australia, New Zealand and southern Asia. Plants form low creeping mats in shallow muddy water on full sun. In the Aquairi knowledge base, populations associated with this form are recorded from Southeast Asia, Australia.
Growth requirements
- Lighting: high
- CO2: recommended
- Temperature: 20-28 °C (68-82 °F)
- pH: 5.5-7
- GH: 2-10 °dGH
- Substrate: nutrient-rich aquasoil
- Maximum height: 3 cm
- Growth rate: fast
- Recommended placement: foreground carpet
Placement
Foreground carpet; closely spaced portions root rapidly under bright direct light and CO2, producing a smooth low lawn. In the Aquairi knowledge base this form is recommended for the foreground as a carpet under high light with pressurised CO2 injection, using nutrient-rich aquasoil.
Propagation
Horizontal stems root at every node; trimming the carpet and replanting clipped portions accelerates coverage. Documented propagation techniques for this entry include: horizontal runners.
Common issues
Low light forces vertical growth and stretching; bright light and dense initial planting are critical to a flat carpet.