Btk products (e.g. Dipel, Thuricide, etc.) only kill caterpillars, they do not kill sawfly larvae. … Many types of sawfly larvae look like caterpillars and even feed like caterpillars, but they are related to bees, wasps, and ants; they belong to the order Hymenoptera.
What do you spray sawfly with?
Wash slugs off leaves with a strong jet of water from the Bug Blaster; larvae may also be sprayed with Safer® Soap. Apply food-grade Diatomaceous Earth for long-lasting protection.
Does dish soap kill sawfly larvae?
Since the larvae are soft-bodied, a homemade spray made of 4 tablespoons of organic soap in a gallon of water will help get them off plants. The stickiness will impede their ability to move and the film left by the soapy water will kill sawfly by means of suffocation.
Will soapy water kill sawfly?
Take some natural Ivory liquid soap and mix it with water, 1 tsp soap to 6 oz of water. Put it in a spray bottle and spray it all over your rose leaves. The combination of Insecticidal Soap and Botanical Pyrethrins will kill Sawfly Larvae on contact if they are spotted in your trees.
Where do sawflies lay their eggs?
Adult sawflies lay small batches of eggs on the underside of leaves in late spring. When the larva hatch, they feed voraciously on the leaves for a while, before dropping to the soil and pupating around the base of the plant.