Thanks Matt, JohnT, Mary-Anne and Mike. JohnT your question about light is important I forgot to say that right at this time of year the sun drops behind the front of our 2-story tract home in San Jose at about 11AM or so. The house faces South. So total light decreases from here on. Plants are in back yard around built-in pool, so I think they get some reflected warmth in the heat of Summer. After now, nothing changes with the plants. They all have the light conditions. There is no diff. in how I treat them either. But it's wierd how some produce acceptably while others get ony a couple flowers. I also use 100% premium organic potting soil and organic fertilizer. I'd hate to calculate what price per pound is for these things. :) Anyway, I don't care about the organic anymore, I just want a good yield. Why do you introduce a fungus to the roots, JohnT? Oh, I leaned why not to overwater. The leaves turn yellow. I always wait until I see droopy leaves. And I guess I'll try the sulphur addition, Mike. It may be too late, but I'm not getting any production now on these few anyway, might as well try. Thanks a lot you all for taking the time to respond so completely! John S.