When it comes to adding a touch of elegance to your outdoor space, large containers can make a big impact – whether it’s on your front porch, in your garden beds, or on your back patio. But let’s face it: filling those oversized pots can be a daunting task, especially when good quality potting soil can be pricey. Not to mention, oversized containers require a surprising amount of dirt to fill them.
7 Surprisingly Cheap Materials to Fill Large Planters
However, there are some unlikely materials that can help you save money on potting soil and create a thriving garden at the same time.
1. Tree & Shrub Trimmings: Harnessing the Power of Hugelkultur
Hugelkultur, a growing trend in the gardening world, involves stacking layers of biodegradable materials to create a nutrient-rich bed for your plants. While gardeners typically use this technique in raised beds, the same principles can work in container gardens as well. By using old tree trimmings that have begun the decomposition process, you can create a hugelkultur garden bed in your large containers.
When using hugelkultur, it’s essential to note that fresh logs and branches can cause a nitrogen deficiency in plants, as all the nitrogen is directed towards breaking down the woody material. However, if you use wood that has started to decay, it will actually add nutrients back into the soil as the season goes.
Simply fill containers with your old trimmings, cover with soil, and plant. This method not only saves you money on potting soil but also provides a unique opportunity to repurpose your yard waste.
2. Empty Bottles & Cans: A Cost-Effective Filler
Another creative solution to filling large planters is using empty bottles and cans. This method might seem unconventional, but it’s a budget-friendly option that has served many gardeners well.
When burying empty cans or bottles in the bottom of your planters, it’s essential to leave the caps on to prevent them from collapsing under the weight of the soil. This way, they take up more space and save soil. However, be sure not to cover the drainage holes in the bottom of your containers, as this can cause waterlogged soil and root rot.
Keep in mind that this method is best suited for ornamental plants, as the microplastics in plastic bottles can contaminate edibles like fruits, veggies, and herbs. But for annual flowers or foliage plants, pop a few 2-liter bottles in the bottom of the pot before filling in with your preferred potting mix.
3. Bricks: A Porous and Wind-Resistant Filler
If you live in an area with strong winds, bricks are an excellent choice for filler material. Not only will they hold down pots – especially top-heavy ones that contain small ornamental trees – but they’re also porous, making them a good filler as long as you don’t cover up the drain holes on the bottom.
However, keep in mind that once you fill your containers with bricks, they will be quite heavy. So, make sure to place your pots in exactly the right spot before you start planting.
4. Broken Terracotta Pot Pieces: A Creative Repurposing Option
Another creative way to fill large planters is by using broken terracotta pot pieces or an upside-down unglazed ceramic pot. These materials are naturally porous, but they’re not as sturdy as bricks. Reusing old potting soil is also a great way to save money, but be sure to sterilize it in the oven or microwave to get around the issue of reusing contaminated soil.
Soil must reach temperatures of 150-200°F for 20 to 30 minutes to be sterilized. This method ensures that your plants receive the nutrients they need to thrive without the risk of introducing pests or diseases into your garden.
5. Wood Chips: A Fast and Free Filler
Wood chips are another awesome option to fill the bottom of a large planter fast and for free. Many tree trimming companies offer wood chip drop-offs straight to your house for no cost. Simply fill containers with your wood chips and cover with soil, and you’re ready to plant.
6. Reusing Old Potting Soil: A Money-Saving Hack
Reusing old potting soil is a great way to save money, but it’s essential to sterilize it first to avoid introducing pests or diseases into your garden. By sterilizing soil in the oven or microwave, you can reuse it without worrying about contamination.
Soil must reach temperatures of 150-200°F for 20 to 30 minutes to be sterilized. This method ensures that your plants receive the nutrients they need to thrive without the risk of introducing pests or diseases into your garden.
7. Burying Empty Cans and Bottles: A Gardening Trick
Burying empty cans and bottles in the bottom of planters is a gardening trick that’s been passed down through generations. While it might seem unconventional, it’s a budget-friendly option that can help you save money on potting soil.
When using this method, be sure to leave the caps on the bottles and not cover the drainage holes in the bottom of your containers. This way, you can create a thriving garden without breaking the bank.
By exploring these 7 surprisingly cheap materials to fill large planters, you can create a beautiful and thriving garden without overspending on potting soil. Remember to always prioritize plant health and use materials that are safe for your edibles. Happy gardening!
