Costway 71" Large Wooden Planter Container with Trellis, Hanging Roof 4 Drainage Holes Mini Artificial Succulents in Round Marbled Ceramic Plant Pots, Set of MyGift 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 DIY Project: Self watering Planters from Reused Materials Minnetrista