Plant care
Four-Leaf Water Clovertemperature & humidity
Marsilea mutica
More about four-leaf water clover
Ideal temperature for four-leaf water clover
Temperature kills fewer four-leaf water clover plants than you'd think. What kills them is the micro-climate within a normal-temperature room — a leaf pressed against single-glazed winter glass, the hot dry updraft directly above a radiator, the cold blast from an AC vent. The thermostat reading at 10-28°C (50-82°F) is fine; the spot you put the plant in matters more. Below roughly 10°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Four-Leaf Water Clover is comparatively hardy (USDA 6-11, RHS H4). Within that range it tolerates a cold dormant spell outdoors; outside it, grow it in a container you can move under cover or overwinter in a cool but frost-free spot. Hardiness assumes an established plant in well-drained soil — a wet, cold root zone kills far more plants than cold air alone.
Humidity for four-leaf water clover
Four-Leaf Water Clover sits happiest at around Aquatic — atmospheric humidity not applicable above the water surface relative humidity. As an aquatic species, atmospheric humidity is not a care parameter of significance. Water temperature of 10-28°C suits active growth. The usual low-humidity tell is crisp brown leaf tips and edges while the soil moisture is fine — a sign the air, not the watering, is the problem. If you need to raise it, the reliable methods are grouping plants together, standing the pot on a tray of damp pebbles (the pot above the waterline, never in it), or running a small humidifier in winter when indoor heating dries the air most. Misting is the least effective — it raises humidity for minutes, not hours.
Four-Leaf Water Clover temperature & humidity — frequently asked questions
What temperature is best for four-leaf water clover?
Four-Leaf Water Clover grows best between 10-28°C (50-82°F). Keep it out of cold draughts, off freezing windowsills in winter, and away from the hot dry air directly above radiators — the extremes matter far more than the average room temperature.
How cold can four-leaf water clover tolerate?
Four-Leaf Water Clover starts to suffer below roughly 10°C. It tolerates a cold dormant period within USDA 6-11, but a wet cold root zone is more dangerous than cold air.
What humidity does four-leaf water clover need?
Four-Leaf Water Clover prefers about Aquatic — atmospheric humidity not applicable above the water surface relative humidity. As an aquatic species, atmospheric humidity is not a care parameter of significance. Water temperature of 10-28°C suits active growth.
How do I raise humidity for four-leaf water clover?
Group it with other plants, stand the pot on a tray of damp pebbles (kept above the waterline), or run a small humidifier in winter. Misting only helps for a few minutes, so it is the weakest option for a plant that genuinely needs more humidity.
Can four-leaf water clover live outside?
Four-Leaf Water Clover is rated for USDA zone 6-11 and RHS hardiness H4. Within that range it can stay outdoors; outside it, grow it in a moveable container and protect the roots from a wet, cold winter.
More four-leaf water clover care
In the UK? Keeping four-leaf water clover warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full four-leaf water clover care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.