Is it still invasive if confined to a container? I have a couple of what are considered noxious weeds, but I happen to like them. I keep them confined to containers on concrete (so they can't sneak out the bottom) and have yet to see volunteers anywhere.
I don't think you can get seeds for that lantana, tho; I believe it's only available as a plant. However, Amazon lists a number of other lantana seeds.
