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?

There's no standard for bagged soil terminology, so always check the label.

Follow these expert-recommended steps for reusing old potting soil.

Many gardeners will use a lot of potting soil each year – and it seems a shame to throw it out once it's served its purpose. The good news is that it can be reused around the backyard if it grew ...

Think of your indoor and outdoor plants a little bit like Goldilocks: They need a just-right potting mix or soil to help them really thrive. And although the words “potting mix” and “potting soil” are ...