Hedyotis Salzmannii care guide
Hedyotis Salzmannii (Hedyotis salzmannii) — medium light, 20-28 °C, pH 5.5-7, CO2 recommended.
Compiled by Aquairi from published sources · Published · Updated
Overview
Hedyotis Salzmannii (Hedyotis salzmannii) is a fine-leaved plant of the family Rubiaceae, grown as an aquarium plant. A delicate creeping stem plant with fine, paired leaves. Forms a low-growing mat when given sufficient light, making it suitable for foreground use or as a carpet alternative. Moderate growth rate allows it to fill in gradually without becoming invasive.
Taxonomy
- Family: Rubiaceae
- Genus: Hedyotis
- Scientific name: Hedyotis salzmannii
- Common synonyms: Oldenlandia salzmannii, Salzmann's Hedyotis
Habitat
Hedyotis salzmannii originates from South America, where it grows in freshwater marshes, ditches and slow-moving streams, frequently emersed on seasonally flooded ground.
Growth requirements
- Lighting: medium
- CO2: recommended
- Temperature: 20-28 °C (68-82 °F)
- pH: 5.5-7
- GH: 2-10 °dGH
- Substrate: nutrient-rich aquasoil
- Maximum height: 5 cm
- Growth rate: medium
- Nutrient demand: medium
- Recommended placement: foreground
- Typical trim interval: 14 days
Placement
In aquascapes this plant suits the foreground.
Propagation
Propagation is by stem cuttings replanted into the substrate, and runners that throw daughter plants on the substrate; daughter plants are separated once they have formed several leaves and visible roots.
Common issues
Pale or stunted new growth usually signals a nutrient or iron deficiency, while algae on older leaves often follows light that exceeds the available nutrients or CO2; correcting fertilisation and trimming affected parts resolves most cases.
Propagating Hedyotis salzmannii: Cuttings and Runners
Overview
Hedyotis salzmannii (also listed as Oldenlandia salzmannii) belongs to the family Rubiaceae, a group of flowering plants that ranges from herbs to small shrubs and is native to tropical and subtropical regions. In the aquarium it grows as a tiny green stem plant that stays largely vertical, remains rare in the hobby, and forms a low bushy stand. Because it both produces upright stems and creeps along the substrate, it can be increased two ways: by stem cuttings and by dividing the runners it sends out.
Propagation Method
The primary method is stem cuttings, the standard approach for stem plants. A healthy top section is cut, its lowest leaves are stripped, and the cutting is replanted into nutrient-rich substrate where it forms its own roots. In addition, Hedyotis salzmannii spreads sideways by runners, so established clumps can simply be lifted and divided where rooted side growth has formed.
Step-by-Step
- Choose a healthy stem and cut the top 5-10 cm with clean, sharp scissors.
- Strip the leaves from the lowest 2-3 cm so a bare node can be buried.
- Insert the cutting into nutrient-rich substrate, spacing pieces a little apart rather than in one bunch.
- For runner division, lift a spreading clump and separate sections that already carry roots.
- Replant divisions and let light and CO2 drive new bushy growth.
Conditions for Healthy Growth
This is an intermediate plant that does best with good light and CO2 injection, which encourage the dense, low mat it is valued for. It prefers warm water (about 20-28 °C), soft to moderately hard water, and a nutrient-rich substrate. Like other carpeting candidates it rewards strong light, pressurized CO2, and both liquid fertilizers and root tabs.
Trimming & Maintenance
Trim every couple of weeks to keep the stand compact and to trigger side shoots that thicken the carpet. Regular topping also yields fresh cuttings for replanting, so maintenance and propagation go hand in hand. Remove any leggy or shaded lower growth to keep the colony healthy.