Wish I saw this sooner! Great tips!

Start by sifting through the old potting soil to remove any large debris, roots, or dead plant matter. This sets the foundation for a fresher mix.

To eliminate any lingering pests or diseases, you can sterilize your soil. One method is to spread the soil on a baking sheet and bake it in the oven at 180-200°F for about 30 minutes. Ensure the soil reaches a temperature of 180°F to be effective.

Adding fresh compost can significantly improve the nutrient profile of your reused potting mix. Mix in 25-30% compost by volume to replenish essential nutrients.

Incorporate a slow-release fertilizer to give your plants a continuous supply of nutrients. Follow the product instructions for correct application rates.

To improve soil structure and drainage, add ingredients like perlite, vermiculite, or coarse sand. Mix these additives thoroughly into the soil to ensure even distribution.

Using a soil test kit, check the pH level of your mix. If necessary, add lime to raise the pH or sulfur to lower it, aiming for the optimal range suited to the plants you intend to grow.

Once revitalized, store your renewed potting soil in a cool, dry place until you’re ready to use it. Proper storage prevents the growth of mold and preserves the soil’s quality.