The Q&A Archives: lawns, carpenter bees

Question: will these wood bees attack me! i can't go out my door,backyard or garage& they have flies with them 1st it was 1 now it's 4-5 .everyday they come back! next question is - do i water the lawn 1st or fertilize and when do i reseed. i've already racked,aerated,and mowed. which step is next . the lawn is dry we've had no rain lately! thank you

Answer: Doris,

Carpenter bees aren't as agressive as wasps but female bees protecting their nests can and will sting. You can treat their individual nest holes in the wood with an insecticide at night to kill the bees. Carbaryl (Sevin) dust is effective. Give it a few days to work and then plug the holes with a wood dowel coated with wood glue and then some wood putty to smooth it over. This prevents future attempts by other beest to use the chamber. Painting exposed wood surfaces discourages the bees from attempting to excavate nest chambers in the wood.

Fertilize and then water with 1/2 inch of irrigation to wash the fertilizer into the soil surface. Reseeding now is fine for a warm season turf species. If it is a cool season grass you'll do better to reseed in early fall.

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