Dahlias
Q.

found yellow and black caterpillars in garden

Anonymous added on June 29, 2015 | Answered

I found my dahlia leaves eaten away overnight by black and yellow caterpillars or worms. How do I get rid of them?

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on June 29, 2015

They can be treated with products containing Bacillus thuringiensis (Bt), a natural bacteria that kill worms/caterpillars without harming plants. Neem oil may be helpful as well. Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/using-bacillus-thuringiensis.htm
https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm

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