Salvinia Cucullata care guide
Salvinia Cucullata (Salvinia cucullata) — medium light, 20-30 °C, pH 6-8, no CO2.
Compiled by Aquairi from published sources · Published · Updated
Overview
Salvinia Cucullata (Salvinia cucullata) is an aquatic plant of the family Salviniaceae, listed in the Aquairi knowledge base as a beginner-level species. It is typically grown under medium light and without obligatory CO2 injection on any substrate. Floating fern with cup-shaped, hairy leaves that form a thick mat at the surface. Provides excellent shade for shy fish and helps control nutrient excess.
Taxonomy
- Family: Salviniaceae
- Genus: Salvinia
- Scientific name: Salvinia cucullata
- Common synonyms: Asian Watermoss
Habitat
Salvinia is a genus of free-floating ferns (Salviniaceae) of still and slow tropical waters; the paired water-repellent upper leaves keep the plant afloat while a submersed leaf acts as a root. In the Aquairi knowledge base, populations associated with this form are recorded from Asia.
Growth requirements
- Lighting: medium
- CO2: not required
- Temperature: 20-30 °C (68-86 °F)
- pH: 6-8
- GH: 3-14 °dGH
- Substrate: any
- Maximum height: 4 cm
- Growth rate: fast
- Recommended placement: floating
Placement
A floating plant that forms a surface mat, diffusing light and providing shade and shelter for surface-dwelling fish and fry. In the Aquairi knowledge base this form is recommended for the floating layer under medium light and without obligatory CO2 injection, using any substrate.
Propagation
Spreads vegetatively by fragmentation, with each detached portion continuing to grow; colonies expand quickly in warm, bright, calm water. Documented propagation techniques for this entry include: adventitious plantlets on flower stalks.
Common issues
Dense mats block light and gas exchange and must be thinned; some species are invasive weeds and should never be released to natural waters.
Propagating Salvinia cucullata (Hooded Floating Fern)
Overview
Salvinia is a genus of free-floating aquatic ferns in the family Salviniaceae. Its leaves grow in three-part whorls of two green floating leaves plus one finely dissected, root-like submerged leaf, and the plant has no true roots. The floating leaves carry hairlike trichomes that make the surface water-repellent. Salvinia cucullata is a hooded, cup-shaped floater whose free-standing hairs measure roughly 0.3–3 mm.
Under good light and nutrition it grows quickly, forming a dense surface mat that shades the tank below — useful for shy fish and for starving out algae, but something that must be kept in check.
Propagation Method
Like the rest of the genus, Salvinia cucullata reproduces vegetatively by fragmentation and division. Because the floating stems branch and bud, any piece that breaks off or is deliberately separated can grow on as an independent daughter plant. This is the only practical home-aquarium method — there is no need for cuttings, spores or sporocarps.
Step-by-Step
- Choose a healthy, dark-green section of the floating mat with intact cup-shaped leaves.
- Gently pull or pinch the connected floating stems apart into smaller daughter pieces; each fragment with a few leaves will continue to grow.
- Skim off the separated pieces with a cup or net so the water-repellent leaves are not pushed under.
- Float the daughter pieces, hairy side up, on the surface of the destination tank.
- Keep surface flow low for the first days so the fragments are not driven against the glass or under the water line.
Conditions for Healthy Growth
- Lighting: low to medium light is enough; brighter light speeds growth.
- CO2: not required.
- Temperature: roughly 20–30 °C suits this tropical floater.
- Nutrients: it draws nutrients straight from the water column; pale, light-coloured leaves signal a shortage of micronutrients.
- Flow: calm water with little surface current gives the best growth.
Maintenance
Thin the mat regularly so it does not seal the entire surface; removing portions keeps light reaching plants on the bottom and lets gas exchange continue. The pieces you remove are your propagation stock — share, move them to another tank, or compost them.
Common Challenges
- Pale or light leaves: usually a micronutrient deficiency — dose a complete fertiliser.
- Leaves wetting and sinking: strong surface flow or condensation breaks the water-repellent hair layer; reduce flow and avoid splashing.
- Runaway coverage: fast growth can shade and starve bottom plants, so trim before the mat closes over completely.