Well prepared garden soil is great for growing things in the ground but when it comes to growing things in containers, soil as you know it needs to be changed.
Most gardeners make potting soil by combining perlite or vemiculite with peat or sphagnum moss. Two other organic materials that you could add to your potting mix are leaf mold and compost, which offer a wide spectrum of nutrients.
Make your own potting soil mix for container gardens, like window boxes, hanging baskets, and pots. It's easy, much cheaper than buying pre-made soil, and .
Use equal parts of peat moss, potting soil, and vermiculite, perlite, or clean sand. Fill the containers to within an inch or two of the rim. To determine how much potting mix you'll need, figure: 3 pints of soil per 6-inch pot.
Poor container gardening drainage is the number one problem in vegetable container gardening. If water drains through your container garden soil like a sieve, .
Gardening Australia ran some potting mix tests that proved this is the case. Even their. .. STEP 1: Pre-soak coir peat in warm water in a large plastic container.