Looking for a simple way to save the potting soil from your hanging baskets and containers this year to use again next year – and save a lot of money in the process?
No matter how much you’d like to save them, most annual plants begin to reach the end of the line by the time late summer rolls around. This applies not only to the vegetables in your garden but also to the plants in hanging baskets and containers.
After growing strong all summer long, most of these plants are not only root bound, but aging fast. In addition, the potting soil has likely been completely stripped of all its nutrients and resources. However, all is not lost with your potting soil!
Of course, one thing you can’t do is just pull the plants and keep the container and potting soil to use again next year. Reusing old potting soil in the same container is asking for plants that will fail quickly next year.
Why You Need To Recharge Potting Soil Before Using It Again
All summer long, hanging basket and container plants have been growing and pushing out new growth as well as blooms. And all of that new growth took a tremendous amount of nutrients and resources from the soil.
You can certainly replenish some of the power with fertilizers and compost, but the soil eventually will become void of most of its resources. And even more important, beyond its energy, that old soil has lost its structure and stability as well.
The soil texture and structure of potting soils become quite different after a long season of growth. It becomes loose, brittle and almost sand like. On top of that, it also has a lot of old roots from the plants that grew in it as well.
If you were to reuse the potting soil “as is” next year, there just won’t be enough substance to power the new plants or to hold in water or nutrients. This is especially an issue when growing the same exact type of plant such as petunias, impatiens, marigolds, or other heavy flowering annuals. All of the power those plants need most is long gone!
Thankfully, there’s another great option besides simply tossing those plants and the soil to the curb!
How To Save Old Potting Soil From Hanging Baskets & Containers
You can actually save the potting soil to use again next year by composting it. But not in your regular compost pile but instead a single potting soil compost pile.
This simple practice helps to give new life to tired, lacking soil by recharging it and gearing it up for another year of strong healthy growth for your new hanging basket and container plants – all while saving you money in the long run!
The Ins & Outs Of Composting Old Potting Soil
While you can add your hanging basket plants and the potting soil to an existing compost pile, the better option is to create a brand new pile. This will allow you to adjust the materials to create a finished potting soil that is perfect for hanging baskets and containers.
In addition, some materials in a traditional compost pile take a long time to break down and decompose. By adding your potted plants and the soil to a separate pile, you can create fast compost that is more than ready for use by next spring or summer.
How To Create Potting Soil Compost Pile
The good news is you don’t need to dedicate a large space to saving your old potting soil. A small corner of your garden that has good drainage works well. You can even use a large trash or drum with holes drilled in the bottom. But once you have an area or container, creating the pile is easy.
The first step is to always remove any seed heads from your potted or container plants. Also toss any plant or plant material that is diseased. Home compost piles just don’t heat up high enough to kill off the seeds or pathogens that might be hanging around.
Now it’s time to start adding the materials to the pile. One of the biggest keys to having materials break down fast is to chop each material up into small pieces. And that starts with the roots and soil left in the pot!
It takes far longer for an entire potted plant, with all of its roots intact, to break down as opposed to the entire ball of soil being first chopped up. With this in mind, the best thing to do is pop your plants out of their container and slice them up with a shovel or garden knife.
The finer you can chop them up, the better. This will allow the plant material to break down fast for a quick recharge. Affiliate Product Link: The Hori Hori Namibagata Japanese Stainless Steel Garden Knife
Adding More Power To Your Pile – How To Save Potting Soil From Containers & Hanging Baskets
The chopped-up potted plants and potting soil will break down fast, but you still need to add a few other materials to help recharge and add new nutrients to the soil.
One of the best materials to add is finished compost, whether homemade or purchased. This helps speed up the process and add loads of organic matter, nutrients and good bacteria that help the pile break down.
It’s best to add one part finished compost for every 5 to 10 parts of potting soil and plants. An organic compost starter can also be added to help speed up the process even more. Product Link: Jobe’s Organics Fast Acting Granular Fertilizer Compost Starter
Once the compost and old potting soil are in place – it’s time to add a few more great materials that you easily find right around your own home and property. Shredded leaves, grass clippings, coffee grounds, and crushed egg shells are all great options – especially since they are free for the taking!
These small materials all break down easily. At the same time, they add plenty of nutrients and organic matter to your potting soil mixture. Again, just as with the potting soil, chop them up as finely as possible before adding.
It’s best to try to add all of the materials all at once or at least within a few weeks of each other. That way, the pile can break down as a whole without having to break down new materials later. This is quite easy to do in the fall with the abundance of materials on hand!
Maintaining A Potting Soil Compost Pile – How To Save Potting Soil From Containers & Hanging Baskets
One of the biggest keys to having your potting soil compost pile break down quickly is to turn the pile often. Use a shovel or pitchfork to mix the materials weekly – or even better every few days. This adds oxygen and speeds the decomposition up tremendously. Continue turning the pile regularly until the pile freezes.
Once the pile thaws in late winter/early spring, start to turn again. You can at this point add coffee grounds to help it heat up again. These break down fast and absorb into the pile almost instantly. They also add nitrogen to the soil which helps recharge it even more.
Once planting season arrives, the potting soil should be ready to use. You can then add it to your hanging baskets and containers as is, or use it to fill your seed starting trays to start seed indoors. (See, “How To Make Incredible Seed Starting Soil – With 5 Simple Ingredients!”)
Here’s to saving your old potting soil to use again next year – all without spending a dime!
Simple Garden Life
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