Plaster = Gypsum?

TheMasterGardener1(5B)January 29, 2012

Hello everyone, maybe you can help. Is plaster of paris good to use, is there any additives? I have read I can use it at 1/4 tsp. per gal of fertilizer/water mix to add Ca and S.

Any experience?

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ronalawn82(z9FL)

TheMasterGardener1, the plaster of Paris used for casts does contain additives to make it more quick-setting and strong. The plaster of Paris used in hobby work might not.
Check list of ingredients on the label.

    Bookmark   January 29, 2012 at 4:04PM
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TheMasterGardener1(5B)

Thank you. It has has Calcium, Sulfur and silicate.

    Bookmark   January 29, 2012 at 4:35PM
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TheMasterGardener1(5B)

I think it will work.

    Bookmark   January 30, 2012 at 12:54PM
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