Garden Update 3: Giii normous Butternut Squash Plant! Zippy's Garden Set of 10 Air plants (Tillandsia spp) growing in the trunk of a tree fern. (Dicksonia antarctica). The tree provides support, not a growing medium Stock Photo Alamy A dollar store laundry basket will produce 8 to 15 pounds of cucumbers on a patio where you thought nothing could grow. The whole setup costs less than what you'd spend on