Hey everyone, This is a first M grow for me. I'm no newbie to horticulture or mycology. I have grown numerous types of orchids, cacti, and vegetables indoors and out for years. Growing entirely under artificial light is new to me.

These plants are about five weeks old and struggling to stay alive. The tips of the new leaves start to yellow immediately. The yellowing progresses to the rest of the leaf and then the leaf dies. Already four plants have died. They all seem to be exhibiting failure to thrive. I've read the faq and can't seem to put my finger on it. There may be more problems than just one. I have also read the international cannagraphic pictoral problem page.

Some basic info on the plants. They are grown under a 250W MH placed 12" above the tops. It was 5" from the tops but they got way too hot (95+) during the days. All the plants are in a 4x4x6 box ventilated to the outdoors with an oscillating fan on the floor. Vegetative temperatures are around 82-85. The problems really started when I switched from peat pots to full soil. It is close to the 'best bud' mix from Sinse Tips.

It is mostly worm castings, some vermiculite, perlite, peat moss, compost, kelp meal, splash of rock phosphate, garden lime etc. Could someone please give me some additional ideas on what's the cause for the death of these plants? I'd rather not see them all die. Thanks very much!
as2k10 Reviewed by as2k10 on . Dying plants! Yellowing and curling Hey everyone, This is a first M grow for me. I'm no newbie to horticulture or mycology. I have grown numerous types of orchids, cacti, and vegetables indoors and out for years. Growing entirely under artificial light is new to me. These plants are about five weeks old and struggling to stay alive. The tips of the new leaves start to yellow immediately. The yellowing progresses to the rest of the leaf and then the leaf dies. Already four plants have died. They all seem to be Rating: 5