Hostas and other surprises

I'm not an experienced gardener, so I get to have many surprises as I freely plant what I get on sale at various garden centres. Take hostas, for example. Really, take some. I didn't know that the tiny potted hosta I brought home 3 years ago would turn into something from the Jurassic Park! It's almost taller than my Juniper shrub! It's so big, it's almost intimidating. Oh, how I laugh now at my sillyness when I planted 3 cute little hostas (don't ask me their names because I didn't keep the little cards that came with them) in a tiny patch of dirt by my front door. They have overtaken my Rose of Sharon, which means that I will have to split them up and find more space for them (or give them to family who, I'm sure, will be grateful when their gardens are taken over by these gorgeous plants). The thing about hostas is...I love 'em. I wish I had a big space so I could have more of them. I have a friend who has at least a hundred hostas in her huge backyard. She just bought 25 more (they were on sale).
By the way - I didn't know that forget-me-not's were such an aggressive spreader. They're pretty though, but come on... my neighbours are having them sprout in their lawns. I got some 'splainin to do.