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I see @ocrdu, I don't have nettles in my garden but now that I know I'm going to flip those leaves and check them out next spring when I go hunting for ladybugs for my strawberry greenhouse.
I'm going to grab some nettle rhisomes in the organic garden as well and grow them in pots they tend to run like strawberries hahaha. Then make tea and hopefully, the guys in this post lay their eggs there next year. Thank you very much for the tip!