Pest identification
What's eating my tricolor bladderwort?
Fungus gnats
Signs: Larvae proliferate freely in the permanently wet, peaty substrate, feeding on fine root-like stolons and disrupting growth.
Control: Yellow sticky traps for adults. Refresh tray water regularly to prevent stagnation. A thin sand layer on any exposed substrate surface discourages egg-laying.
Algae
Signs: Green or blue-green algae coat pot walls and the water tray, competing for light and nutrients, and occasionally overgrowing the plant's tiny leaves.
Control: Use opaque pots and trays; place foil or card around the water tray if algae is aggressive. Change the tray water every few days.
Aphids
Signs: Small colonies on the delicate flower scapes sap energy from the plant and leave sticky honeydew.
Control: Dab affected scapes with an isopropyl alcohol swab. Remove badly infested scapes entirely to prevent the spread to the main plant crown.
Keep tricolor bladderwort pest-free
Healthy plants resist pests best. Get the basics right:
Tricolor Bladderwort pests — FAQ
What is eating my tricolor bladderwort?
Utricularia tricolor is an aquatic/semi-terrestrial bladderwort grown in standing water or very wet substrate. Its bladder traps catch microscopic organisms but offer no protection against fungus gnats — the main pest — whose larvae thrive in waterlogged conditions. Algae compete aggressively in the bright light this plant needs. Aphids may visit flower scapes.
How do I get rid of fungus gnats on tricolor bladderwort?
Larvae proliferate freely in the permanently wet, peaty substrate, feeding on fine root-like stolons and disrupting growth. Yellow sticky traps for adults. Refresh tray water regularly to prevent stagnation. A thin sand layer on any exposed substrate surface discourages egg-laying.
How do I get rid of algae on tricolor bladderwort?
Green or blue-green algae coat pot walls and the water tray, competing for light and nutrients, and occasionally overgrowing the plant's tiny leaves. Use opaque pots and trays; place foil or card around the water tray if algae is aggressive. Change the tray water every few days.
How do I get rid of aphids on tricolor bladderwort?
Small colonies on the delicate flower scapes sap energy from the plant and leave sticky honeydew. Dab affected scapes with an isopropyl alcohol swab. Remove badly infested scapes entirely to prevent the spread to the main plant crown.