Lawn Marshpennywort

The variegated form of Hydrocotyle sibthorpioides carries cream and pale green patches across its small rounded leaves, which makes each creeping shoot look like a chain of tiny coins in two tones. Unlike the all-green species, it needs stronger light to maintain the variegation — under insufficient light the new leaves revert to solid green and the plant stretches toward the surface.

This is one of the more demanding foreground creepers in the trade. CO₂ injection is essential; without it the plant stalls and eventually decays, which the Flowgrow species profile states plainly as 'a must (20 to 30 mg per litre).' High light, stable nutrients, and regular trimming are needed to keep it as a low mat rather than a vertical tangle. It grows from both runners and cuttings, and each node that touches the substrate sends out roots.

When conditions are right, the growth rate picks up noticeably after an initial slow establishment phase. The plant also grows emersed on moist soil, where it can be propagated more quickly for later submersion. Outdoors in warm months it spreads readily; in the aquarium it works as a bright accent among darker foreground plants like Monte Carlo or dwarf hairgrass. No Flowgrow record documents the variegated form, so this entry is flagged for review: the parameter set is a disclosed assumption taken from the parent species, not a source confirmation of this specific form.