New Jersey Zone 6B- 7A.

Last yr we planted a decent sized one in a container aprox 18" or 24" and it did great but was incredibly pot bound by the end of the season.

I have 3 vines each aprox 6 inches and growing quickly.

Do you have better luck planting in the ground or containers? If containers work better for you what size should I go for and should I just put one vine in each pot?

Any other tips or tricks are welcome!