Would oyster shell work to add calcium to the tomato garden?

I have heard calcium will help avoid blossom end rot on tomatoes. I have a 50 lb. bag of oyster shells for my chickens. Could I use this?
  2 answers
  • Janet Pizaro Janet Pizaro on May 24, 2017
    There searches say yes,I personally have never heard of that method,however,word of caution the shells must be free of salt.

  • Sylvia Sylvia on May 24, 2017
    save your egg shells and put in coffee grinder or anything to grind to powder put in jar and th is works great for your tomatoes and its free