How to make your own blood & bone meal

Written by rachel spradling
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How to make your own blood & bone meal
Make your own blood and bone meal and use it to enrich your garden soil. (Jupiterimages/liquidlibrary/Getty Images)

Blood and bone meal is used as a fertiliser to enrich vegetable and flower gardens with additional nitrogen, phosphorous and calcium. You can blend it into your seed mixture or soil to ensure deep green vegetables and add it around the base of newly planted trees. Blood and bone meal can be purchased at most garden centres, but you can also make your own using kitchen scraps, your oven and a food processor.

Skill level:

Things you need

  • Roasting chicken
  • Two baking trays
  • Food processor

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  1. 1

    Remove the roasting chicken from the package. Pour the blood and juices from the bottom of the package onto a baking tray. Turn on the oven to 191 degrees Celsius. Cook the blood and juices in the centre of the oven until dried. Scrape off the dried material into a container, let it cool and put it in the refrigerator. Roast the chicken itself as you normally would.

  2. 2

    Pull the bones from the roasted chicken and pick them clean. Lay the bones in a single layer on a baking tray. Place the baking tray on your kitchen counter for three or four days, until the bones are completely dried out.

  3. 3

    Over several more days, put the baking tray in the oven after baking something else, while the oven is still hot but turned off. Repeat this until the bones are brittle enough to crush.

  4. 4

    Put the bones into a food processor, put the lid on and use the "Pulse" setting to reduce the bones to a rough, pebbly mixture. Add the dried blood and Pulse until blended. Add the resulting blood and bone meal to your garden soil.

Tips and warnings

  • Leave a window open in your kitchen when baking the bones; the smell is unpleasant.
  • Too much blood and bone meal can "burn" your plants, adding too much nitrogen to the soil. Use sparingly.

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