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Removed started grow question 3 years ago
Hello fellow growers, I would like you to advice me on what's wrong with the leaves on the picture 5 (last one)? Is it Magnesium deficiency for it is on older leaves (brown spots)?
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20 weeks
Channel + SeedLover
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56 comments · 3 years ago
Week 9
Leaves. Color - Mottling
Thee_HoffGuyy answered grow question 3 years ago
hey SeedLover! You pretty much got it. It looks like it has some slight cal-mag deficiency and some iron deficiency it does not look bad thought because most of the newer growth does not seem affected. It Tends to show up more in places with newer or actively growing spots, that's why when you get a Calcium deficiency it doesn't really show up on leaves that are not in direct light. Calcium tends to stay where it is and is not as mobile as other nutes hence why it tends to show up on newer or actively growing spots. An Iron deficiency most of the time tends to show up too when you are having cal-mag issues. Makes sure your runoff pH is in a good range if it is then sweet you can eliminate improper pH:+1:. If your pH is good then you should give it a flush with plain pH'd water to help get rid of any possible salt build up. Then resume feeding, you may want to try a feed-water-water-feed schedule to ensure the plant is not getting more than it needs and giving it time to uptake what been added. Also if you are not already you should add a Cal-Mag type product. Hope this helps out:blush: Happy Growing!:facepunch:
OutForReal answered grow question 3 years ago
It is a cal mag def , and your plant is looking pale so it is a general def. I would raise the soil feeding and low on the foliar
The_Projexx answered grow question 3 years ago
To me this isnt mag deficiency , mag def is usually lots of yellowing in the middle of veins of your leaf usually accompanied by red/purple stems on your plant . I think its Iron deficiency more then I do magnesium . This is essentially caused by having to much salt on your root zone preventing them from absorbing nutrients properly . You can fix this by simply feeding PH corrected water for the next few feedings and then resume feeding with nutrients after . I may advise that when you start with nutrients again to start slowly and work your way up to prevent this sort of lock out from happening again . You may also want to consider watering every 2nd or 3rd watering with nutrients in order to make sure you plants use up most of whats available to them in the medium before cramming new nutrients in , this will also ensure that your plants root zone doesn't get too "hot" preventing lock outs and nutrient burns . Once you start to restablize your plants it wont take long till they explode in growth again , the leaves that are already damaged arent going to get better as they would will say with light nitrogen deficiency but they should slow then come to a stop . I may also advise to take away any of the damaged leaves so its less encouraging for pests to wanna come make a nice home in your plants . Over all your in good shape just a few things to adjust and you will be rocking and rolling in no time ! I hope this information helps shed some information on your grow! -Happy Growing!
Mrs_Larimar answered grow question 3 years ago
You nearly hit it. it looks cleary like a calcium defiency. Most time caused due the rootzone, the nutrient cannot be absorbed by the plant. Could be caused by Ph issue, or your nutrients are not cannabisfriendly enough. Solutions: check your Ph ( runoff ) , if its wrong give a nice flush and soil will stabilize.
Give the plant additive calcium after stabilizing the PH. the damaged leaves wont recover, check the new growing leaves, if it happens again