Potamogeton obtusifolius thrives in permanently submerged conditions. It requires a consistent depth of clean, slow-moving, or still water, typically between 30 and 100 cm.

Avoid fluctuating water levels, which can stress the plant. Ensure the substrate remains moist and stable.

Pruning is usually unnecessary for Potamogeton obtusifolius as it naturally maintains a desirable form. If excessive growth occurs or if old/decaying leaves are present, trim them back carefully with aquatic plant scissors to maintain aesthetic appeal and prevent rot.

Propagation of Bluntleaf Pondweed is primarily achieved through vegetative means. Division of rhizomes or the planting of turions (overwintering buds) are common methods.

Simply ensure these fragments are planted in suitable substrate in the appropriate water depth.

Repotting is rarely required for this aquatic species. If it becomes too dense or needs to be moved, carefully lift the entire plant or its rhizomes from the substrate.

Replant into a suitable aquatic soil or gravel medium in the desired location, ensuring it is stable.