raise the calcium

Discussion in 'Organic Lawn Care' started by humble1, May 10, 2008.

  1. humble1

    humble1 LawnSite Silver Member
    from MA
    Posts: 2,499

    Are there any products other than lime that are out there that have high calcium levels. I dont want to raise mag.
  2. NattyLawn

    NattyLawn LawnSite Bronze Member
    Posts: 1,643

    Gypsum (calcium sulfate)
    Chitin from crab, lobster, shrimp, crawfish and other shells and insect exoskeletons.
  3. greenguy08

    greenguy08 LawnSite Member
    from ohio
    Posts: 99

    Do you just want to add calcium or do you want to raise your pH as well? If your pH is fine, then use gypsum. If you need to raise pH and add calcium without adding magnesium, then use hi-cal lime. Only dolomitic lime tends to have much magnesium, and it's pH buffering ability is superior to ther types, incidentally.
  4. ICT Bill

    ICT Bill LawnSite Platinum Member
    Posts: 4,115

    They mine coral calcium in Florida, no Mg at all. The liquid form is suppose to be effective and fast acting. Some say it comes with all kinds of micronutrient as well, it would make sense, since it was a reef at one time. I have not seen the micro breakdown on anyones product though. They may be too small as a precentage to claim on the label

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