Hypertufa trough planter - Fine Gardening
Make a Hypertufa Trough | Fine Gardeningo make a rectangular planter, I use two nesting cardboard cartons as molds. The larger box functions as the outside form and the smaller box is placed inside. This creates a space of 1 in. to 2 in. between the two boxes into which the mixture can be packed and tamped down. A larger trough will require thicker walls to maintain strength and, therefore, more space between the two boxes.
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