Bacillus thuringiensis (Bt) - Susan's in the Garden

Bacillus thuringiensis (Bt) is a bacteria that is safe for humans but deadly for the larval stage of certain insects. It is fairly easy to find in large garden centers and online. It is typically sold in a concentrated liquid that is diluted with water prior to application. The diluted liquid is then sprayed on the foliage or other areas []

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