Can mistletoe be cut from the host tree and planted in a pot to make a topiary?
I wish I had thought of something like this. However, in all my research on mistletoe (Philodendron, various species) I can only find two general areas of comment: How to get rid of it and How poisonous it is (for instance, if you bring it inside). Since it is a parasite, growing on woody plants, I doubt that it will grow in dirt. They take nutrients and moisture from the host plant. It propagates by seed. The seed has to land on another branch in order to germinate. So my guess is, I don’t think so.