What is the best way to: How do you choose a container in which to grow a cranberry seedling?

Options are: +Measure the size of the seedling's root ball and purchase a pot that is at least double that size.. +Measure the size of the seedling's vines and purchase a pot that is at least double that size..
Answer:
Measure the size of the seedling's root ball and purchase a pot that is at least double that size.