leaf rollers

rrs

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Pond is 2 years old. Several aquatic plants including Cannas. Cannas are subject to Leaf Rollers - a worm type bug which fastens the emerging leaves with a silk like substance. When the silk is cut or broken, there may be a worm type thing in the leaf, or, it may already have progressed to some other form (?).

Does anyone know of a chemical (or other treatment), which will kill the leaf roller but not kill the fish???
 
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Is it possble to take the plant out treat it and then quarantine it for a bit longer then replace it in your pond? Just a thought bc that is probably what I would do.....
 

rrs

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It turns out that BT and specifically BTk is effective to control all types of caterpillars and is also safe with fish. Tested by several universities and the EPA.

I have used it several times and the problem seems to be resolved....and no dead fish so far.

BT is available in farm feed stores for about $10. The guy uho sold it to me said that he uses it in a goldfish pond and it controls mosquitos....I'm not sure I believe that since the technical data says that BTk (Thuride) is very specific to the caterpillar family.

Thanks for your interest.

rrs
 

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