Posted: 09/07/2012 at 11:18
As I have probably said on this site a hundred times or more, you can grow anything in a pot if you are willing to supply all its needs 52 weeks a year. I grow trees, shrubs, bulbs, hostas and many, many other things in pots - over 400 of them, but it does take alot of work. This is not a complaint, it is after all a self inflicted injury.
Yes you can grow cotinus in a pot, if the pot is big enough. Start with as small a pot as needed, depending upon the size of the tree you buy or get given, and move it up to bigger ones each early spring until it has got as big as you want it to. You will need to prune the shrub annually, and feed it regularly. The red one does better in a pot as it is naturally slightly less vigorous than the green one, but both are possible. As with anything in a pot you must do everything for the plant that it would do for itself in the open ground, weeding is essential, feeding and watering (though not this year much!), drainage and general care. Enjoy, growing things in pots can become an obsession, but really is a great way of having things wherever you want in the garden without having to depend on soil alone.