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.
When choosing what to use to fill containers, never use garden soil by itself no matter how good it looks or how well things grow in it out in the garden. When put
Loose and porous mixtures not only make a container lighter to move, but they transport water, fertilizer, and air to plant roots more quickly. The perfect potting mix does not contain soil or garden dirt. It's composed of peat moss, vermiculite, perlite, sand, and shredded bark or compost.
Soil taken from your yard or a garden bed is too dense to use in a pot or raised bed. Instead, for containers, you'll want to use potting mix (also called potting soil)
Find out what makes a good potting mix â€” and why it's better than actual garden soil for filling containers and raised beds.