Maya Ellison
Window boxes are a great way to add a pop of colour and life to your home, but they can be heavy and cumbersome to maintain. Lining your window boxes with plastic can help with water retention, especially if your boxes are in an exposed area, and prevent dirt from leaking out. However, plastic liners can be shallow, visible, and may cause condensation and rot. There are alternatives to plastic, such as biodegradable materials, natural clay, and styrofoam, each with their own pros and cons. In this article, we will explore the different options for lining your window boxes and the benefits and drawbacks of each, so you can make an informed decision about which lining is best for your needs.
| Characteristics | Values |
|---|---|
| Purpose | To retain water, improve drainage, and prevent root rot |
| Materials | Plastic, plastic mesh, burlap, or other fabric |
| Pros | Easier, neater, and helps keep deeper soil contained |
| Cons | Shallow depth, visible, and may cause condensation leading to rot |
| Alternatives | Natural clay, terracotta, styrofoam, or pots |
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What You'll Learn
Use plastic mesh to stiffen the long fronts and backs of your planter box
Plastic mesh can be used to stiffen the long fronts and backs of your planter box. This is especially useful if your liner is more than half an inch taller than your planter, as it will provide support for the front edge. Cut the plastic mesh to the height of your liner. For example, if your liner is 6 inches tall, cut your plastic mesh to 6 inches. You can use multiple pieces of plastic mesh to support the front length, allowing them to overlap slightly. Slip your supports inside and pin them in place along the long folded edge and the seamed edge. Position the ends of the supports about a quarter to half an inch away from the corners. Reinforce the row of support mesh by running two rows of straight stitch along it. Finally, close up the raw ends by turning them in half an inch and stitching them closed.
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Cut the plastic mesh to the height of your liner
When lining your window boxes with plastic, it's important to consider the height of your liner. If you want to add a layer of plastic at the bottom and up the sides, measure the height of your liner accordingly. This will help retain water and is especially useful if your window boxes are exposed to wind and sun, which can cause the soil to dry out quickly.
To ensure a precise fit, cut the plastic mesh to the height of your liner. For example, if your liner is 6 inches tall, cut the plastic mesh to the same height. This step is crucial to creating a neat and tailored look for your window boxes.
It's worth noting that you can use plastic mesh pieces from old projects or other leftover materials. By cutting them to the desired height, you can utilise these materials effectively. This not only saves resources but also allows you to customise the number of pieces needed to support the front length of your window boxes.
After cutting the plastic mesh to size, you can proceed to pin and stitch it in place. This process involves securing the plastic mesh inside the window box liner, ensuring it fits snugly between the corner pins. The pins can be removed and replaced as you work, or you can mark their spots with a pencil or a faint marker.
Overall, taking the time to cut the plastic mesh to the height of your liner ensures a customised and polished appearance for your window boxes while also providing the functional benefit of improved water retention.
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Use a permeable weed barrier to line your box
Using a permeable weed barrier to line your window box is an effective way to ensure good filtration and prevent weeds from growing. This method involves placing a layer of permeable fabric, such as landscape fabric or weed block fabric, at the bottom of your window box. The fabric should cover the drain holes, allowing drainage water to pass through it and helping to separate the dirt from the water. This results in cleaner drainage, with water coming out of the bottom of the box clear and free of sediment.
When using a liner in your window box, it is important to ensure that both the liner and the box have drain holes in similar locations to facilitate easy drainage. If there is any risk of drainage issues, the liner may need to be propped up slightly.
The permeable weed barrier serves as a crucial step in preparing your window box, as it prevents the channels and reservoirs from becoming clogged with dirt or other materials. By lining your box, you can avoid the hassle of constantly monitoring drainage and unclogging drain holes.
Additionally, the weed barrier helps to create a cleaner aesthetic for your window box by preventing dirt from escaping through the drain holes and maintaining a neater appearance. This two-fold benefit of functionality and aesthetics makes the permeable weed barrier a valuable consideration when lining your window boxes.
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Plastic liners help plants retain water
Plastic liners are a great way to help plants retain water. They are especially useful for window boxes, which are often shallow and exposed to the elements, causing them to dry out quickly. By lining your window boxes with plastic, you can create a waterproof barrier that helps to maintain moisture levels in the soil.
There are a few ways to go about lining your window boxes with plastic. One option is to use a plastic liner designed specifically for planters, such as the HDPE plastic liner. This type of liner is waterproof, puncture-resistant, and UV stabilized, ensuring a long lifespan for your project. The HDPE liner can be cut and shaped to fit your window box, providing a custom solution for your planting needs.
Another option is to get creative and make your own plastic liner. You can use plastic mesh or leftover plastic from other projects to create a custom-sized liner for your window box. This DIY approach allows you to control the height and coverage of the plastic, ensuring that it fits your planter perfectly. Poke holes in the liner to improve drainage and prevent water accumulation, which can lead to fungal and bacterial issues.
Plastic liners offer a neat and efficient solution for your window boxes. They are easy to install and maintain, making them a popular choice for gardeners. By using plastic liners, you can provide your plants with the water they need while also protecting your window boxes from deterioration caused by soil and water.
It is important to note that while plastic liners are effective in retaining water, they can also affect drainage. The solid barrier created by the plastic can impede water flow, so be sure to create drainage holes or use a breathable material like burlap to prevent waterlogging and root rot. With proper care and consideration, plastic liners can be a functional and stylish addition to your window boxes, enhancing the health and beauty of your plants.
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Avoid using styrofoam as it breaks down easily with water
Lining window boxes with plastic is a great way to retain water and prevent your plants from drying out. While plastic liners can be beneficial, it's important to avoid using styrofoam as a lining material. Styrofoam, also known as polystyrene, is a single-use plastic commonly used for vegetable packing boxes. Although reusing styrofoam boxes can reduce waste and your ecological footprint, it is not an ideal material for window boxes due to its tendency to break down easily with water contact.
Styrofoam is non-biodegradable, and while it can have a long life with careful handling, it is not suitable for direct exposure to water. When styrofoam comes into contact with water, it can break down and turn into a soggy mess. This moisture will accelerate the rot process, causing the material to deteriorate faster. Therefore, using styrofoam in window boxes, which require regular watering, is not recommended.
Additionally, styrofoam is often confused with other plastics, such as polyvinyl chloride (PVC), which has been associated with the release of toxins like lead, phthalates, and dioxin. To ensure the safety of your plants and the environment, it is best to avoid using styrofoam as a lining material in window boxes.
There are alternative options available for lining your window boxes. You can use burlap, cloth grow bags, or natural materials like terracotta or clay. These materials provide drainage and help prevent rot. Additionally, you can reuse plastic pots that come with other plants or create custom-sized planter liners using plastic mesh. These alternatives offer functionality, style, and a budget-friendly approach to lining your window boxes while avoiding the potential issues associated with styrofoam.
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Frequently asked questions
Plastic liners can help your plants retain water and prevent root rot. They also allow you to plant directly into the box without having to fill it entirely with soil.
Plastic liners are shallow, reducing the amount of space available for plants and soil. They are also visible, which may detract from the appearance of the window box.
Landscape fabric or weed block fabric can be used to line window boxes and improve filtration. Burlap is a natural alternative that provides good drainage. Clay can also be used, but it must be fired in a kiln first or it will turn muddy and soggy.
Cut plastic mesh to the height of your window box and place it inside, supporting the front length with corner pins. Stitch the mesh in place and close up the ends by turning them in and stitching them closed.
