If you have sex in flowering plants, make sure it isn’t poison ivy.
Poison ivy can produce flowers but it is often spread by runners. In order to really get rid of the nasty stuff (we have a small farm and have been working on this for years), you need to dig deeply into the ground and dump poison on the root system. It will continue to come back but if you mow it regularly it will eventually give up. It loves to hang out with bind weed, wild rose and wild grape vines. Those plants can, if not controlled, kill 30-50 foot high trees. I have scars from serious poison ivy exposure.