Give Old Potting Soil New Life

How to Recharge a Planter or Raised Bed

Yes, you can use the old soil in your pots, planters and raised beds. Just start the season with a special boost that ensures good results. With a couple ingredients, you can transform depleted soil into fertile ground for whatever you want to plant.

Old soil in raised bed

After a season of growth the soil in this raised bed is a couple inches low.

Top it off: If the level of soil has dropped, add fresh planting mix also known as potting mix. Ideally, the soil comes to within an inch or so of the rim of the planter or raised bed. Use a fork or hand tool to blend the new soil into the old soil.

Combining new soil with old soil

Blend new soil into the old soil.

Fertilizer and Compost Plus

Gardener's Supply Organic All-Purpose Fertilizer and Container Booster Mix

Recharge it: Measure the square footage of your raised bed or pot to figure out how much of the two "secret ingredients" you need for your bed.

  1. Gardener's Supply Organic Fertilizer: Use 1/4 cup per square foot. Slow-release, granular organic fertilizers give plants balanced nutrients for vigorous root growth and improved water penetration all season long.
  2. Booster Mix: Use 3 cups per square foot. This is the secret sauce! This potent, all-organic formula includes a complete diet of nutrients and trace elements to keep plants lush and healthy: concentrated plant and manure compost, washed granite, black rock phosphate, and other natural ingredients.

Fertilizer and booster mix sprinkled on the soil surface.

Sprinkle the granular fertilizer and booster mix onto the soil surface. Use a hoe or cultivating tool to incorporate the ingredients into the top few inches of soil.

Plant, feed and repeat! Now sow seeds or plant transplants into your raised bed, and then stand back. Great results are sure to follow. During the season, keep your plants happy by feeding them regularly.


Plants grow stronger and faster with regular feeding.

Last updated: 12/28/2022