Last summer I went to a several vendor days at my local hydro shop. There was a scientist (looking) guy who was discussing Mycorrhiza. His company was selling a blend of 3 types of Mycorrhiza that he said was better than the 1 type of Mycorrhiza that is found in FF Happy Frog. He also said that a bag of FFHF does not have very much Mycorrhiza in it. I don't really recall many more of the technical details of that conversation from last year.:stoned:

In my experience I have found the FFHF to be the best media for starting new young plants. I have always believed that this was due to the Mycorrhiza. I was told by a friend who went to Oaksterdam U that he heard the Mycorrhiza will attach to the roots and will cause the plant to grow hardier throught the entire growth cycle. I have tried soils without Mycorrhiza and the results were shocking. The plants in the super soil were runted by comparison to plants started in FFHF. Even after transplanting the stunted ones into FFHF they never recovered and were still smaller at the end of the season.

I am not sure if this proves anything. This year I plan on putting a little packet of extra Mycorrhiza under each plant when I put them in the ground. They also sell Mycorrhiza in about a 3 or 4 ounce jar for about $50 but that is supposed to work for several holes. I don't know where rhizome got his for $10 but maybe he will let us know.

Just my 2c sorry I don't rememer more of the scientific details. I am hoping to talk to these folks again this summer.