Veins yellowing

Green Giant84

Active Member
Iron deficiency. I'm pretty sure that is it, treat deficiency by lowering the soil ph to 6.5 or less. Avoid fertilizers that contain excessive amouts of manganese, zinc, and copper, witch inhibit iron uptake. High levels of phosphorus compete with the uptake of iron. Improve the drainage; excessive wet soil holds little oxygen to spur iron uptake. Increase root zone tempature. Apply chelated iron in liquid form to root zone. Leaves should green up in four to five days.

Str8 from my Marijuana Growers Bible!!!!
 
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