Large decorative containers often require filling significant void space without adding excessive weight or cost. Using lightweight materials as a base filler is a common solution. Pool noodles, made from buoyant polyethylene foam, provide an effective and inexpensive method for creating this filler layer. This technique is ideal for deep containers that only require a shallow layer of soil for the plant’s root system.
Functional Benefits of Using Pool Noodle Fillers
The primary benefit of using pool noodles is the significant reduction in the planter’s overall weight. Saturated potting mix can become extremely heavy, making large containers difficult to move. Since polyethylene foam is lightweight, planters can be easily relocated for cleaning, seasonal changes, or better sun exposure.
Utilizing pool noodles also saves costs by minimizing the volume of expensive potting mix required. The noodles occupy the lower volume of the pot, allowing gardeners to reserve quality soil for the root zone. Furthermore, the foam pieces improve the container’s hydraulic properties. They create air pockets that promote better drainage and aeration, preventing waterlogging and reducing the risk of root rot in deep planters.
Preparing the Noodles and Planter Base
Before assembly, cut the pool noodles into smaller sections to fit the container’s shape and volume. Common methods include slicing chunks two to four inches thick or cutting longer, vertical segments. The foam pieces must be clean and dry to prevent introducing contaminants or excess moisture. Aim to fill approximately one-third to one-half of the container’s depth with the prepared foam.
First, inspect the planter to ensure the drainage hole is completely clear. Although the noodles are lightweight, their placement must not obstruct the exit point for excess water. Distribute the cut noodle pieces across the bottom of the planter, settling them snugly to cover the base area. This layer establishes the void space, lightening the pot and improving water movement at the container’s lowest point.
Layering and Planting Technique
Once the base layer of pool noodle chunks is in place, introduce a physical barrier to separate the foam from the potting soil. This permeable layer prevents fine potting mix particles from sifting down and filling the foam’s air pockets, which would negate drainage and aeration benefits. Use a sheet of landscape fabric or a thin, breathable cloth, laid directly on top of the noodle layer.
With the barrier secured, fill the remaining volume of the container with high-quality potting soil. Ensure the soil depth above the barrier is sufficient for the plant’s mature root system to develop. The soil layer should generally provide at least six to twelve inches of growing medium, depending on the plant species. Finally, plant the chosen vegetation, followed by thorough watering to settle the mix.