Posted 8/1/2020 17:13 (#8409272 - in reply to #8409005) Subject: RE: can I use calcium carbonate for gardens?
De Forest, WI
Calcium nitrate. If you have a local garden center you can get it from there. Usually in a 5-10lb pail. You could also get a 50lb bag from Nolts produce supplies for less than $25. They are near you. Get the greenhouse grade as that dissolves better. The other has a coating so it is easier to put on dry with a spreader.
I always use cal nitrate once tomatoes are fruiting. Even if you have consistent water the plants can fruit so heavily that that can’t move enough calcium from the soil. Cal-nitrate usually solves this problem. Below is what I buy from Nolt’s Midwest Produce Supplies: