
Plastic garden edging is a practical, inexpensive, and flexible option for those looking to upgrade their landscape. It is also easy to install and can be accomplished in a few hours. However, one of the challenges with plastic garden edging is that it can be difficult to get it perfectly straight. If you want to straighten your plastic garden edging, there are several methods you can try. One suggestion is to lay the edging in the sun with bricks on top to weigh it down, or to use a heat gun to flatten it. Another method is to dig a trench and insert the edging into the ground, ensuring that it is straight before filling in the empty space with dirt and watering it to hold it in place. If you encounter any slight wobbles, you can also try to back-fill on the sod side to push it straight.
Characteristics and Values Table for Straightening Plastic Garden Edging
| Characteristics | Values |
|---|---|
| Plastic edging type | Rolls, L-shaped flexible edging |
| Installation | Straighten roll edging by laying it in the sun with bricks on top, or use a heat gun |
| Insert a metal rod in the top tubular portion of roll edging | |
| Dig a trench 2-4 inches deep and 1-2 inches wide for L-shaped edging | |
| Unroll L-shaped edging a day or two before installation to flatten | |
| Mark the edge with spray paint to follow | |
| Back-fill on the sod side to straighten little waves | |
| Dig out a small piece of sod behind the wobble to straighten | |
| Measure the desired area with string or a flexible measuring tape | |
| Use a garden hose to water the dirt and settle it firmly |
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What You'll Learn

Unroll plastic edging and lay in the sun
If you want to straighten your plastic garden edging before installing it, unrolling it and laying it in the sun is a good idea. This technique can help to remove any curls or kinks in the plastic that may have formed when it was packaged in a roll.
To do this, simply unroll the plastic edging and lay it out in a sunny spot, such as on your driveway. You can weigh down the ends with something lightweight, like rocks, to prevent the plastic from curling back up. If you want to speed up the process or don't have access to direct sunlight, you can use a heat gun to apply heat to the plastic edging. However, this may be more effort than simply letting the sun do the work.
Depending on the climate you live in and the amount of direct sunlight you receive, leaving the plastic edging in the sun for a day or two should be enough to straighten it. In some cases, the plastic may still retain a slight curve, in which case you can flatten it with something heavy and then use a heat gun to finish straightening it.
It's important to note that while this method can help to straighten the plastic edging, it may not always be completely effective. Some people suggest that inserting a metal tube or rod into the top tubular portion of the edging is a more reliable method of straightening it.
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Weigh down with bricks
Weighing down plastic garden edging with bricks is an effective method to straighten it. This process involves placing bricks or other heavy objects along the edging to apply pressure and weight, straightening the plastic. To do this, first identify the sections of edging that need to be straightened. Then, lay the edging out on a flat surface, such as a driveway, and place a brick at each end and several bricks in between, spacing them evenly. If the edging is curved, focus on placing the bricks at these points to apply pressure and weigh them down. It is recommended to leave the bricks in place for a few days, allowing the plastic to adapt to its new shape. Warmer temperatures can aid in this process, as the heat helps to soften and mould the plastic. After a few days, remove the bricks and check if the edging has straightened to your desired result. If not, you may need to repeat the process or try a different method, such as using a heat gun.
This method of using bricks or heavy objects to straighten plastic garden edging is a practical and straightforward solution. By applying weight and pressure to the edging, it can be effectively straightened without the need for complex tools or expensive equipment. The process is simple and only requires a few bricks or heavy objects that are likely already available. Additionally, by laying the edging in the sun, the warmth can aid in softening the plastic, making it more malleable and receptive to the weight applied.
When using this method, it is important to secure the bricks or heavy objects in place to prevent them from moving. This can be done by stacking them or using other weights to hold them down. It is also crucial to ensure that the surface on which the edging is laid is flat and stable, providing an even foundation for the straightening process. The number of bricks or heavy objects required may vary depending on the length and severity of the curves in the edging, so it is advisable to have a sufficient number readily available.
For those with time constraints, it is worth noting that this method may take a few days to achieve the desired results. If a quicker solution is needed, alternative methods, such as using a heat gun, can be explored. However, these alternative methods may require more specialised tools and may be more labour-intensive. Therefore, for those seeking a simple and cost-effective solution, weighing down plastic garden edging with bricks is a practical and accessible option.
In conclusion, weighing down plastic garden edging with bricks is a straightforward and practical method to straighten it. By applying weight and pressure to the edging, the plastic can be moulded into a straighter form. This process is simple, cost-effective, and can be aided by warm temperatures to soften the plastic. With a bit of patience and the right conditions, this method can help achieve neat and straight garden edging.
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Use a heat gun
Using a heat gun is an effective way to straighten your plastic garden edging. It is a quicker method than leaving the edging in the sun, but it does require more work.
First, identify the sections of edging that need to be straightened. Put on protective gloves to shield your hands from the heat and the sharp edges of the plastic. Plug in your heat gun and set it to medium heat. Hold the heat gun around 6 inches away from the deformed area and move it back and forth to soften the plastic. Once the plastic is soft, use your hands to shape it back into place. Continue to apply heat until the plastic is straightened and secure, then allow it to cool and harden.
This method of using a heat gun to target heat application is a quick way to achieve straight and aesthetically pleasing garden borders.
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Dig a trench
Digging a trench is an important step in the process of installing plastic garden edging. Here is a detailed guide to help you through the process:
First, you need to determine the depth and width of the trench. The general rule of thumb is to dig a trench that is 2-4 inches deep and only about 1-2 inches wide. This depth and width will provide enough space to insert your plastic edging and secure it in place. Mark out the desired path for your edging using string or flexible measuring tape. This will ensure a straight and consistent trench line.
When digging the trench, use a shovel or another trench-digging tool. Try to create a flat "wall" along one side of the trench, which will provide a straight and stable surface for your plastic edging to rest against. Keep the dirt you dig out nearby, as you will need it later to backfill the trench and secure the edging.
If your plastic edging came in a roll, it is recommended to unroll it a day or two before installation to allow it to flatten and straighten out of its rolled-up shape. Lay the edging along the trench line, ensuring it is lined up straight and follows the desired path.
Finally, use the dirt you set aside earlier to fill in the empty space around your plastic edging. This backfilling process will help secure the edging in place. You can lightly step on the dirt to pack it down and create a firmer hold.
By following these steps for digging and installing your plastic garden edging, you can achieve a straight and secure border for your garden beds.
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Backfill on the sod side
Plastic garden edging is a cost-effective and flexible option for your garden. It is easy to work with and can be installed in a few hours. However, it can be challenging to get it perfectly straight.
If you find that your edging has little waves, you can backfill on the sod side to push it straight. This involves using a shovel or spade to add soil behind the edging. As you do this, force the edging against the wall of the trench and pack the dirt in as you go. Keep adding soil until it is slightly higher than ground level, as it will settle after the first rain or watering.
To ensure your edging is straight, start by marking out the edge with spray paint or environmentally safe marking paint. Then, dig a trench along the marked line with a shovel or spade. The trench should be 2-4 inches deep and only about 1-2 inches wide. If your edging came in a roll, it is a good idea to unroll it a day or two before installation to allow it to flatten out.
Once you have dug the trench, lay your edging along it, pressing it against the vertical wall. Use the soil you removed from the trench to backfill on the sod side, packing it down as you go. You can also lightly step on the dirt to compact it further. Finally, add some water to allow the dirt to settle firmly, holding your edging in place.
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Frequently asked questions
If your plastic garden edging came in a roll, you can lay it out in the sun before installing it to allow it to flatten. You can also weigh it down with bricks and leave it for a couple of days.
Leaving the plastic edging in the sun for a couple of days should be enough to straighten it.
If leaving it in the sun doesn't work, you can try inserting a metal tube or rod in the top tubular portion of the edging.
First, measure the desired area by running a string or a flexible measuring tape along the path you want to edge. Then, dig a trench 2-4 inches deep and lay your edging along the trench line. Fill in the empty space around the edging with dirt and use a garden hose to water the dirt so it settles firmly.
Unroll the plastic edging a day or two before installing it to allow it to flatten out of its rolled-up shape. You can also backfill on the sod side to straighten out any little waves in the edging.










































