i HAVE SEVERE UPWARD LEAF CURL ON NEW GROWTH ONLY. TWO FEET AWAY SET EARLY ORION RED WITH NO NOTICABLE CURL. i PULLED ONE PLANT UP AND THERE IS A PURE WHITE GROWTH (SHOOT) 1.5" LONG. tHE ROOTS ARENOT AS HEALTHY AS WE USUALLY HAVE WITH PRESTIGE. MOSTLY THERE AREN'T AS MANY ROOTS AS USUAL tHESE ARE 6" PLANTS. THE HARDIER PLANTS ARENOT AS EFFECTED AS THE SMALLER ONES. eVERY BREAKS NEW GROWTH IS CURLED UPWARD.

Do you have a picture you can post?

What has been applied for chemicals for the duration of the crop?

Are you seeing any chlorosis or necrosis with the curl?

Is the crop still shaded? What have temps been like in the greenhouse?

There are a number of things that can cause leaf curl so please get back to us and we'll try to narrow down the possibilities. Again, a picture would also be really helpful.

Thanks!