Couple Brown spots on leaves, HELP?!

Discussion in 'First Time Marijuana Growers' started by Dennisg34, May 6, 2011.

  1. yes, my biggest plant (picture below) has a couple fan leaves with some spots...i've had this plant for 7 weeks (yes i know it's small, started out first 5 weeks with just window light) and it's never had these before the other day. i removed once set of fan leaves already cause they were bad, i don't see how they can be light burn, they aren't even close to the light, and it only gets between 75-78 degrees, idk the humidity, but can those happen with little humidity? If so, what's the best way to increase it? just spraying? doesn't that also cause spots if they dry on the leaves? or the bowl of water trick? anything will help:) thanks!

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  2. Check your soil pH. How often do you water and how dry does the soil get before you do? What have you fed it? While the pH may be to blame, the spots are likely a symptom of Phosphorus deficiency.
  3. yeah i haven't checked my PH yet:( should get a move on that...and i water when it's dry, and i give it nutes every other watering
  4. Maybe a nute build up?

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