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Compost Coffee Ground

Compost Coffee Ground

Coffee grounds can be an excellent addition to a compost pile and are an ideal way to slowly boost nitrogen levels in the garden. The grounds are relatively rich in nitrogen, providing bacteria the energy they need to turn organic matter into compost.

Coffee Grounds have an approximate Carbon to Nitrogen ratio of 20 to 1, which means it has 20 carbon blocks for every 1 nitrogen block. Used coffee grounds can be a safe substitute for nitrogen-rich manure in the compost pile.

Too much nitrogen can be a bad thing though because it can change the acidity of a soil and too much acidity or too much base can burn and damage your plants.

You should mix coffee grounds with the soil around acid-loving plants. Add brown leaves and grass clippings with coffee into a mulch to help balance the pH levels of the soil. The grounds help to accelerate the composting process of the mulch.

When composting, coffee grounds should not be more than 25% of any organic material. You can add one teaspoon of lime or wood for every five pounds of coffee grounds to balance the acidity in your compost.

Here area few recommendations on using coffee grounds:

  • Sprinkle used grounds around plants before rain or watering. This will allow for a slow-release in nitrogen.
  • Add to compost piles to increase nitrogen balance. Coffee filters and tea bags break down rapidly during composting.
  • Dilute with water for a gentle, fast-acting liquid fertilizer. Use about a half-pound can of wet grounds in a five-gallon bucket of water; let sit outdoors to achieve ambient temperature.
  • Mix into soil for houseplants or new vegetable beds.
  • Encircle the base of the plant with a coffee and eggshell barrier to repel pests.
  • If you are into vermi-posting, feed a little bit to your worms

If you are composting you are already on the right track... Keep it Green!

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