Hydroponic Water Clover: Marsilea in Shallow Tubs
Hydroponic water clover means growing marsilea, a small aquatic fern with clover like leaves, in a shallow tub or jar of water over inert media. UF/IFAS Extension notes many emergent aquatic plants grow different leaves above and below water, while Colorado State University Extension covers potting aquatic plants for water gardens.
The short answer
Hydroponic water clover grows well in a shallow tub or jar with inert media such as coir or vermiculite. UF/IFAS notes most aquatic plants are tropical plus need warmth with significant light. Use low nutrient water, set the crown just above the media plus shade the reservoir to limit algae.
Can water clover grow out of water?
UF/IFAS describes some emergent aquatic plants as amphibious plus heterophyllous, which means their leaves look different above or below water. It notes leaves grown above water are sturdier than submerged ones. Expect new leaves to change shape after moving to an emersed tub.
What setup suits emersed water clover?
University of California Master Gardeners list coir, perlite plus vermiculite as inert media. Colorado State notes peat plus perlite float in water gardens, so a jar or tub with standing water does better with coir or vermiculite.
| Factor | Target | Tip |
|---|---|---|
| Media | Coir or vermiculite | Peat plus perlite float, per Colorado State |
| Crown | Just above the media | Colorado State potting advice |
| Warmth | Warm room | Most aquatic plants are tropical, per UF/IFAS |
| Nutrients | Low | High levels feed algae, per UF/IFAS |
| Reservoir | Dark | Root darkness limits algae, per Illinois |
Source: UF/IFAS, Colorado State, UC Master Gardeners plus Illinois Extension.
How much light does emersed water clover need?
UF/IFAS notes most aquatic plants need significant light. A bright window or grow light works. Illinois Extension notes roots need darkness to avoid algae, so cover the sides of a clear jar or use an opaque tub.
How to: step by step
- Buy vigorous water clover from a plant shop.
- Rinse the roots plus trim mushy parts.
- Set the plant in a jar or tray of coir or vermiculite.
- Fill with clean water to just below the crown.
- Cover lightly to hold humidity.
- Place under bright light plus top up water weekly.
Troubleshooting
Leaves melt after the move: new emersed leaves replace underwater ones, per UF/IFAS notes on heterophyllous plants. Wait for new growth.
Algae in the jar: too much light on the water or too many nutrients. Shade the jar plus cut back on fertilizer.
Runners spread past the tub: UF/IFAS notes rhizomes plus stolons let aquatic plants spread. Trim runners plus bag them for disposal.
For media plus water care see hydroponic in different mediums, caring for your hydroponic system plus aquarium water for cannabis. Kind Seed Co also stocks cannabis seeds.
Sources
- Freshwater ornamental aquatic plant production in Florida (FA251), UF/IFAS Extension
- Water gardens: planting aquatic plants (PlantTalk 1026), Colorado State University Extension
- Hydroponics for the home gardener, UC Master Gardeners of Orange County
- Home hydroponics handouts, University of Illinois Extension
FAQ
How fast does emersed water clover grow?
Growth depends on light plus warmth. UF/IFAS notes most aquatic plants are tropical plus need warmth with significant light, so a warm room under a bright lamp gives the quickest growth. Expect a slow pause after the move while the plant replaces underwater leaves with sturdier emersed ones.
Can emersed water clover go back underwater?
UF/IFAS notes amphibious aquatic plants can grow leaves that look different above or below water. A plant moved back under water will likely shed some emersed leaves plus grow new submersed ones. Make the change slowly plus give it bright light while it adjusts to the new conditions.
Does water clover need fertilizer?
Very little. UF/IFAS notes high nutrient levels lead to algae, so it advises low nutrient water plus avoiding overfeeding. In a small tub or jar, a weak dose now and then is plenty. Watch for algae on the media plus cut back if green film appears on the water.
How often should the water be changed?
UC Master Gardeners advise checking nutrients, water level plus pH regularly in home hydroponics. Top up water as it evaporates plus refresh it if it smells sour or turns cloudy. A full change every few weeks is a simple habit, and roots stay cleaner when the reservoir stays dark.
Which media works for hydroponic water clover?
UC Master Gardeners list coir, perlite plus vermiculite as inert hydroponic media. Colorado State notes peat plus perlite float in water gardens, which makes them a poor choice in a jar with standing water. Coir or vermiculite stays put plus gives roots something to grip while new runners form.
