I found the same problem today with my gypsum...Only it was wet.. I figure it should be fine when it dries out..at least I hope. LOL!

JoJo

It won't change anything chemically, but it might harden into an aggregate clump so it's difficult to break up and mix into your medium.

Al

I need to know how much lime to add to my potting mix. I'm planting tomoatoes in 5 gal SWC. My directions say to mix 2 cups of dolomite in. Is Pelletized dolomitic limestone the same?

I'll let the SWC experts answer your question, but I use 1 tbsp/gallon of soil and never have issues with BER. 2 cups seems extreme to me, and would be enough for 30+ gallons of the soils I use lime in.

Al

The earthbox folks recommend 1 cup for an entire EB, which is 2 cubic feet of soil. I put it in the day I planted and I did have BER issues.

I'd suggest making sure you let the lime sit in the mix for a few weeks before planting to make sure it's available from day one.