Mosquito Control in Utricularia Tubs: Dunks, Dragonfly Nymphs, and Damselflies

A grower with U. inflata in a small tub struggles with mosquito larvae. Mosquito dunks work but seeks better prevention.

Optimize Dunks

• Use donut-type (monthly duration) vs. fast-kill/short-life types.
• Replace every 4 weeks consistently.

Biological Control: Dragonfly/Damselfly Nymphs

• Strict carnivores—don't eat plants.
• Harmless to humans (play dead).
• Adults eat mosquitoes.
• Source: biological supply companies (e.g., Berkshire Biological).
• Damselfly nymphs work similarly.
• Combine with occasional dunks for best control.

Note on Bladderworts

Frogs/tadpoles can devastate Utricularia collections—monitor ponds.

Integrated approach (dunks + predators) keeps water clean and plants safe.