Marsilea Crenata

Quick facts

Identity

Also known as

Dwarf four leaf clover; Water clover; Dwarf water clover

Synonyms

Marsilea minuta (often treated as synonym in trade)

Environment

Freshwater

Native to

Southeast Asia, Indonesia, Thailand, Philippines, India, Australia

Habitat

Rice paddies, ditches, swamps, floodplains and marshy ground subject to seasonal flooding and drying

Sourcing

Aquacultured

Conservation

Not Evaluated

Care

Care level

Easy

Growth form

Carpeting

Max height

0.4 – 1.2 in (1 – 3 cm)

Growth rate

Slow

Placement

Foreground, Carpet

Water

Temperature

68 – 82 °F (20 – 28 °C)

pH

6.0 – 7.5

GH

2 – 15 dGH

Flow

Low-Moderate

Light

Medium

CO₂

Beneficial

Planting

Substrate

Nutrient-rich preferred

Feeds from

Both

Fertilizer needs

Medium

Colors

Green, Brown

Feeding & breeding

Propagation

Rhizome division, Runners

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Care guide

Overview

Low-tech and CO2-injected foreground setups alike suit this carpeting fern, which stays compact under brighter light and grows taller in shade. Its clover-shaped leaves shift to a simpler one- or two-lobe form once fully submersed, a normal transition rather than a problem. Growth is slow, spreading by creeping rhizome, so patience and steady fertilizing matter more than intensity of care.

Care

A slow but forgiving carpeting fern that suits low-tech tanks as easily as CO2-injected setups, growing shorter and more compact under brighter light and taller and more open in shade. It spreads by a creeping horizontal rhizome that roots into the substrate and pushes up new fronds, gradually knitting into a low mat rather than shooting up quickly. Leaves change shape as the plant transitions from its emersed, four-lobed clover form to a simpler one- or two-lobe submersed leaf, which is a normal adjustment and not a sign of decline.

Planting & trimming

Divide potted or tissue-cultured portions into small clumps and press the rhizome flat along the substrate, spacing pieces a few centimeters apart so they eventually knit into a continuous carpet. Keep the rhizome itself at the substrate surface rather than burying it, weighting or pinning pieces down until roots anchor them. Trimming the tops encourages the rhizome to branch and spread sideways rather than upward, speeding carpet formation.

Fertilizing

Feeds through both roots and the water column, so root tabs placed near the rhizome combined with a weekly all-in-one liquid fertilizer give the most consistent results. Iron and other micronutrients help keep new growth green rather than pale, since deficiency tends to show as yellowing or stalled leaf production rather than obvious spotting. CO2 is not required but speeds growth and fill-in noticeably when combined with steady fertilizing.

Propagation

Propagates readily by dividing the creeping rhizome into sections, each with roots and at least one growing point, and replanting them separately. Runners naturally extend the mat outward, and daughter plantlets that form along the rhizome can be cut away and relocated once established. Growth is slow, so multiplying a single plant into a full carpet takes patience over weeks to months.

Problems

Algae on the small leaves is the most common complaint and usually points to excess light, weak flow, or insufficient nutrients rather than any fault in the plant itself. Some leaf drop after planting is expected as emersed leaves die back while the plant converts to submersed growth, and this resolves once conditions stabilize. Because it grows slowly, a heavy algae bloom can outcompete it for light, so trimming nearby fast growers and improving circulation helps it recover.

Sources

1. Marsilea Crenata Care Guide | Melbourne Tropical
2. PROSEA - Plant Resources of South East Asia
3. Dwarf water clover care: light, CO2 and placement · TankBud
4. Marsilea crenata - 1-2-GROW! | Aquasabi - Aquascaping Shop

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