Paul M. Cook wrote:
"David Hare-Scott" wrote in message
...
Paul M. Cook wrote:
I have a box of Fix-All wall patching compound. It is gypsum, lime,
starch and some other inert ingredients. What would be a good
formula for tomatoes? My tomatoes are growing very fast and setting
fruit. I know they need calcium. Would this be good for other
plants like peppers and cukes?

Not unless you know what sort of lime it is (the name represents
several compounds) and what the 'inert' ingredients are and the
various proportions. At a guess it is mostly gypsum (calcium
sulphate) which is the core ingredient in most plaster products. This is
pH neutral and supplies calcium, it is often used as a clay
breaker. Other ingredients might not be so benign.


It says limestone. The soil pH is 6.2 according to my 7 dollar meter.

Paul

The pH of 6.2 is about right for veges so you don't want to be liming the
soil. As DER said buy some gypsum if you are concerned that your tomatoes
need calcium.

David