Ah Ha, so they have added a wetting agent, ProMix is peat based. That would make a difference. I started using the bales, they were cheaper than the loose mix, back in the 1970's when I had a small nursery. I used it almost exclusively until we moved 4 years ago, it is difficult to find where I am now living. I am using Ocean Forest, Happy Frog or Black Gold now, they are expensive but good quality.
