I just got several mulberry trees. They were grown at a local nursery in pots, are between six and seven feet tall, and the trunks are very skinny. Otherwise, they appear in good health, and are not root-bound. My question is in regards to planting them. The trunks are very long and flimsy. Should I just plant them as is, should they be staked to keep them from bending, or should they be cut back and allowed to regrow? I have never planted trees this skinny/tall and want them to do good. Any advice would be appreciated. By the way, one type is labelled as ever bearing, and the other as black mulberry.