Repurposing a Garden Cushion Box as a Planter

Repurposing items can be a cost-effective solution for garden projects. This guide explains how a standard garden cushion storage box can be transformed into a functional planter, offering a practical alternative to more expensive container options.

Why Choose a Cushion Box?

Plastic garden cushion boxes possess characteristics that make them suitable for use as planters:

• Dimensions: They typically measure around 120 cm in length and 60 cm in height, providing ample space for various plants.
• Material: Constructed from durable plastic, they are designed for outdoor use and weather resistance.
• Assembly: These boxes are generally designed for easy, tool-free assembly, often snapping together. The lid is not required for their use as a planter.

Preparing the Planter

Once assembled, the cushion box requires specific preparation steps to function effectively as a planter:

• Styrofoam Lining: Line approximately three-quarters of the box interior with repurposed Styrofoam packaging material. This serves multiple purposes:
  • Reduced Soil Volume: It significantly reduces the amount of potting mix required, as these large boxes can hold approximately 320 liters of soil.
  • Improved Drainage: The Styrofoam helps prevent waterlogging, promoting healthier root development for plants.
  • Frost Protection: It provides additional insulation, offering a degree of protection for plant roots during colder periods.
• Structural Stability: The Styrofoam filling also contributes to maintaining the box’s structural integrity under the weight of soil and plants. For enhanced security, particularly in freezing conditions, consider reinforcing the box walls with a tie-down strap.
• Drainage: Dedicated drainage holes in the base are not necessary. Water can effectively drain through the inherent seams and connections where the box panels fit together.
• Sealing Openings: Any pre-existing openings, such as a front clasp recess or holes along the rim designed for the original hinged lid, can be covered with black electrical tape. This tape can be removed later once the plants have grown and naturally obscure these areas.