How to prune hydrocharis morsus-ranae

Summer through early autumn during active growth. Simply lift excess floating rosettes by hand and remove them from the pond. Peel away dead or yellowing leaves. In temperate regions, the plant sinks turions to the bottom in winter — no action needed.

Every 3–4 weeks during growing season. Frogbit requires very little pruning. It is a free-floating plant that spreads by runners and offsets. Thin overcrowded mats regularly by lifting excess rosettes from the water surface to allow light penetration and prevent oxygen depletion. Remove dying or decaying leaves to keep the water clean. No structural pruning is needed.

Simply lift excess floating rosettes by hand and remove them from the pond. Peel away dead or yellowing leaves. In temperate regions, the plant sinks turions to the bottom in winter — no action needed.