Lawns are ecological deserts for a lot of reasons, possibly including use of chemicals being sprayed. I’m seeing plenty of Toxomerus nectaring on flowers in gardens close to mowed areas, but have yet to find larvae. I haven’t particularly searched for them either so maybe I should pay more attention to that. I think the species I have in my yard feed primarily on aphids as larvae, so they would depend on having plants with aphids available. Plenty of those around my yard, not sure if there would be any aphids on grass though.
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