Once you've opened a bag of potting mix, it makes sense that it will lose efficacy if not used right away. But how long is too long left opened and unused?

But problems at planting time set the stage for an entire season’s worth of trouble. Many, if not most, planting problems result from failing to adjust practices and equipment to fit soil and weather ...

Potting soil may seem like it lasts forever, but it has a shelf life. Over time, the organic materials in most potting mixes, such as peat moss, bark, compost, or coconut coir, break down. As they ...

Use your old potting soil in the garden to help plants establish and to replenish your beds.

Learn how to build a garden compost system, choose a suitable method, manage greens and browns, control moisture and airflow, and know when it’s ready.