Talk about spreading. I started with 1 plant . There's no where in my yard that doesn't have lemon balm. Even out in the north 40. Not one of these were planted. I cut it down every year. Comes back every time. I don't think it deters any insects. All flies, mosquitoes and wasps are every where. It does cover a lot of ground if you need coverage. And stays very healthy. My spearmint doesn't spread anywhere. Just stays around the pond. So planter beware, don't plant unless you want it everywhere.
Talk about spreading. I started with 1 plant . There's no where in my yard that doesn't have lemon balm. Even out in the north 40. Not one of these were planted. I cut it down every year. Comes back every time. I don't think it deters any insects. All flies, mosquitoes and wasps are every where. It does cover a lot of ground if you need coverage. And stays very healthy. My spearmint doesn't spread anywhere. Just stays around the pond. So planter beware, don't plant unless you want it everywhere.