I did a search but I couldn't find this asked or answered. I just joined the forum and I can't upload an image or a url but I purchased Ageratums at Home Depot today. They came in pint-sized plastic containers. Last year when I planted them I used a knife to cut the containers open. It was hard to get them out without damaging them. This year it seemed, if anything, more difficult, so I decided to try planting the whole thing -- flowers and containers -- in the ground. Is that a good idea or a no-no?