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Plaster = Gypsum?

Posted by TheMasterGardener1 none (My Page) on
Sun, Jan 29, 12 at 15:08

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?

Follow-Up Postings:

RE: Plaster = Gypsum?

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.

RE: Plaster = Gypsum?

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

RE: Plaster = Gypsum?

I think it will work.

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