My dahlias, petunias and roses seem to be snacking ground for all types of stuff, besides the slugs and snails that love eating anything I plant. I have the slugs sort of under control at this point using sluggo, but what I believe are aphids started to make fast work of my petunias. I considered getting ladybugs, as that seemed much more eco-friendly, but in the end, I was scared by the dire warnings I read on the internet about how if you wait a few days (which I had already done) you will get a huge horrible infestation that is very difficult to get rid of.
I bought some pest spray, which seems to have done the trick, but yesterday I saw what looked like a tiny grasshopper and an ant chomping away on my gorgeous dahlias. How long should I wait after having sprayed my flowers with the pest killer before trying to put ladybugs in the yard for a more comprehensive and less yucky solution? Is it already too late for this year?