How to prune myriophyllum aquaticum

Spring through summer during active growth. Cut stem tips back by one-third to one-half using clean aquatic scissors or shears. Remove dead or browning stems at the base. Cuttings root readily, so dispose of them carefully rather than composting near open water.

Every 3–4 weeks during growing season. Parrot's feather grows vigorously and benefits from regular trimming to prevent it smothering other plants and to keep growth dense and attractive. Pinch or cut stem tips to encourage bushy growth. Remove any brown or dying stems promptly. It can become invasive outdoors, so trim frequently and never release cuttings into natural waterways.

Cut stem tips back by one-third to one-half using clean aquatic scissors or shears. Remove dead or browning stems at the base. Cuttings root readily, so dispose of them carefully rather than composting near open water.