black spots

  1. S

    Redness - Black Spots - Yellowing - Help!

    I have been searching on line and am thinking it might be due to potassium or possible magnesium. About a month ago I noticed black spots on about 3 of the bottom fan leaves, the next day the spots were on about 5-6 fan leaves and I cut them off. When I woke up and checked on her there are...
  2. S

    Help - Unknown black spots on leaves

    I have been searching on line and am thinking it might me due to potassium or possible magnesium. About a week ago I noticed black spots on about 3 of the bottom fan leaves, the next day the spots were on about 5-6 fan leaves and I cut them off. Now today when I wake up and check on her there...
  3. M

    Any idea what might be wrong with my baby?

    IMG 3584 — imgbb.com IMG 3585 — imgbb.com IMG 3586 — imgbb.com This is an auto Russian Haze. About a month flowering. Been giving nutes every other watering. The top side seems like a N toxicity but these spots? Calcium def.? Both of them started like 2-3 days ago. Im aware that it...
  4. J

    Leaves undercurling with black patches

    This outdoor Blue Magoo plant is 7-8 weeks old and has never been fertilized. I have it in a 25 gallon cloth grow bag with Fox Farm Ocean Forest soil. All of the plants in the garden are doing very well but this one recently started to get undercurled leaves with black spots. Any guess what this...
  5. D

    My first grow - I need help - Black spots on leaves

    Hello. I have a little problem with my plant. In 02 months has appeared some black dots on top of the leaves. I do not know how to avoid this fungus or removing it. I searched a solution and i found a article that said could be flies then I cover with a screen in the air input to prevent...
  6. D

    I need help - Black spots on leaves

    hello guys I have a little problem with my plan. It has 02 months and this period has appeared some black dots on top of the leaves. In the first two leaflets he appeared when I cut them afraid ploriferar this fungus, only I do not know how to avoid this fungus or removing it. In my research...
  7. S

    Black spots, leaf burn and lighting?

    Hello all from down under, New to this site and to growing indoors. I have some problems I need your help with please! I have been growing outdoors for years but have decided to try my hand at indoors this year as I had some sensi seeds and want to keep the strain going. Ok so here it...