Behind that beautiful bee balm, which was invited and welcomed into my rock garden, are the biggest catnip plants I have ever seen. I did not plant them. I thought I had carefully cut the flower heads from the catnip I did plant last year so it wouldn't re-seed, but I have learned my lesson: If you must plant catnip, do so in containers, the further away from your garden the better.
By the way, that tall thing behind the catnip is stinging nettle, which has somehow managed to take over part of my garden. Amazingly I've seen it in seed catalogs. Why would anyone deliberately plant something that will cause immediate agony if it is brushed against? I know, the new greens are tasty and loaded with nutrients when cooked, and some folks swear by the tea made from dried leaves as a "tonic". I even make a "stinking nettle tea" that works wonders in the garden. But when it gets to this stage, I need full body armor to deal with it.
I removed the catnip today to make more room for the bee balm and various herbs on the other side of it, and to try and keep it from re-seeding next year. I did harvest catnip leaves until I had a bowl full, to dry for cat treats and a calming tea. I tossed a few of the leaves to the usual bunch of cats hanging around, and they were indifferent. Perhaps they are unaware of the street value of my harvest to all the true catnip junkies out there.