contaminating any new plants.
Put on a pair of garden gloves and remove any plants from your potting soil.
Lay a tarp outside and dump the contents of your flower pots in the middle of the tarp. Run your hands through the old potting soil and remove any plant roots, pieces of plant or stones. Crush up any soil clumps.
Weigh or eyeball how much old potting soil you have. Figure out what half of that is and add that much compost to the pile. You will end up with a ratio of 2:1 (old potting soil to compost). The compost will add new nutrients to your old soil. https://www.gardenguides.com/124481-rejuvenate-potting-soil.html I have saved coffee grounds and eggshells all winter long so I add 10% off these ingredients to the pile.
Homemade Organic Fertilizer Recipe
To make your own balanced all natural fertilizer:
1/3 cup of green sand (potash and minerals)
1/3 cup of rock phosphate or bone meal (phosphorous and minerals)
1/3 cup of alfalfa or soybean meal (nitrogen)
1 tbsp Azomite (70 minerals and trace elements)
Add 25 percent of either peat moss or perlite to your old soil. This will keep your old potting soil draining well. https://www.motherearthnews.com/organic-gardening/revitalize-your-potting-soil-with-compost-and-homemade-fertilizer-zbcz1403
Use a shovel to mix the ingredients. Once they are combined, you can begin refilling your flower pots. This recipe has everything covered. I am so ready to make some potting soil! It has been six months since the weather has been 50* A very long winter for us in Northern Wisconsin. Any way you choose to mix your soil will definitely improve the depleted nutrition, your plants will thrive again this Summer. Best of luck and Happy Gardening! 2/25/2018 I am going to try this. http://theplantguide.net/2017/09/24/7-things-put-tomato-planting-hole-best-tomatoes/ It all makes sense to me.