7 Gallon Injection Molded Nursery Pots Horyard Plastic Have you considered growing blackberries in containers? This is our second year of growing a thornless blackberry in a container, which is half of a 30 gallon drum. We have created a custom soil Yamadori: Collecting Wild Bonsais Bonsai Tree Gardener Detailed View Root System Aloe Vera Stock Photo 2635805607 Shutterstock