Anyone ever had a fungal infection on an utricularia?

I'm slowly aclimatizing a utricularia I just bought, but when I removed the plastic yesterday I saw what I think might be some fuzy stuff growing on one of my utricularia. I googled "utricularia fungus" but got nothing, so I'm curious if this has ever happened to anyone? Do utricularia even get fungal infections? I've got a little fan running over it now in the hopes it makes whatever it is go away, but I got no fungicides. I'll probably buy a sulfur-based fungicide tomorrow (about $13 at Canadian Tire), but my understanding is that it's primarily a preventative. I don't know where in Ottawa to get the Chlorothalonil, Tebuconazole, or Neem Extract recommended by the carnivorous plants experts to treat active infections. Any suggestions of what to do would be appreciated.

Lloyd Gordon

Parasitic Plant Aficionado
Staff member
Which species?
Perhaps just remove obviously infected bits.
Put the rest on a coffee filter moistened with pure water.
Leave on a dish, in a humid, well lit terrarium ~ 20-25°C.
Probably would not use chemicals.
Sandorsinii. Don't have any coffee filter or unoccupied terrarium presently argh. Also reluctant to remove what little of the plant I have given what I paid for it, but I'll consider it if it doesn't get better.


To get rid of the fungus, you can pull out a leaf and put it in distilled water, and once the leaf grows into a new plant, then you can put it into a fresh media away from the infected plant an start over your culture.


Yes, Utrics can get fungus. The most commonly encountered in cultivation is mildew on the leaves. Especially large leaves species like U.longifolia can get red spots or a whitish surface. It is annoying, but harmless, and easy to get rid of. It is easily cured with a spray of chinosol or another fungicide (e.g. those used for roses).
"Fuzzy stuff" is usually mould of organic matter of the substrate or a decaying dead insect. So before spending a lot of money on chemistry it is better to try to improve the growing conditions: Better, new substrate, better light and more air ventilation. Most Utrics are hard to kill. So an easy and common way to get of fungus and algae on semiaquatic and terrestrial species is to add 0.5mm of new substrate on top and new healthy leaves will grow through this leayer soon. Another safe and cheap way to solve fungus and insect problems that is worth a try is to submerge the pot for maybe 2 days. Drain and see if it helped.
To avoid loosing a plant by trying new untested methods you should always take some cuttings. U.sandersonii is a very easy and forgiving species that grows back from leaves and small peaces of stolons.