Can you elaborate? My knee-jerk wonders if they dry out too quickly. I use at least 3 inches of MG when I winter sow.

Bakemom, scroll down to see a couple of different kinds sold by this company. One thing I was thinking about using them for was green leafy vegetables. I wouldn't grow them very long in the cubes before transplanting them outside.

Here is a link that might be useful: Cubes

I used them this year for the "most critical" peppers and tomatoes. I start my seeds so early, I transferred those cubes to keg cups of soil.

I'm not sure they were better then the much cheaper light greenish cubes, but they do degrade easier in the ground.