I have been trying to germinate tomato seeds lately with poor success. I am
not sure why. I have been using some rock wool cubes that were given to me.
These seem to soak up water well--maybe too well. They my be keeping the
seeds too wet.

In the past, with cubes from another source they have done very well indeed.
Roots would grow out of the cube into the surrounding medium and I would
plant the entire cube.

I would appreciate any insight into what may be wrong. The question
uppermost in my mind is: Just how wet should the cubes be? Should they be
saturated with water? Should the be a bit on the dry side although still
moist?

Bill