Using crushed egg shells

Posts

• Hostafan1 Posts: 34,889

  February 2021 edited February 2021

  I've read ( no idea if it's true ) that crushed egg shells "emit " a chemical which encourages worms to breed. 
  If it's true, it's a very good reason to add them to the compost heap. 
  I can't imagine adding them as a top dressing would be of any use unless they're several inches deep. 

  Devon.

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• BenCotto Posts: 4,718

  February 2021

  I’ll make a guess and say to make a top dressing that’s 3” deep you’ll need 4 egg shells per square inch. Now in our household we eat c. 6 eggs a week so for a medium sized apple tree we’d need to wait around 54 years to top dress it. The tree might have died before then; we certainly will have,

  Rutland, England

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• Latimer Posts: 1,068

  February 2021

  BenCotto said:

  I’ll make a guess and say to make a top dressing that’s 3” deep you’ll need 4 egg shells per square inch. Now in our household we eat c. 6 eggs a week so for a medium sized apple tree we’d need to wait around 54 years to top dress it. The tree might have died before then; we certainly will have,

  #theydidthemaths

  I’ve no idea what I’m doing. 

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• Plashing Posts: 328

  February 2021

  I have heard that they are good at  stopping slugs, but then you would need a lot of crushed shells especially in my garden, its like banana skins are good for roses but there again you would have to eat a lot if you have a lot of roses, I don't think you would have a lot of time to do the garden you would be spending a lot of time on the toilet.

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• fidgetbones Posts: 17,618

  February 2021

  I bake and crush them and put them round the delphiniums and lilies in the garden.
  

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• Blue Onion Posts: 2,995

  February 2021

  Just chuck them in the compost and spread the results as a top dressing for your apple tree out to the drip line.. I think you'll have better results than 54 years of egg shell collecting.  

  Utah, USA.

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