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Old 04-21-2008, 06:09 PM
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Default Leaf problems - yellow & rusty spots older leaves dying
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Help... first time grower. yellow spots turning into rusty looking spots. It started out with just the tips turning brown on the older fan leaves, now the yellow spots are showing on alomst all of the leaves. Plants are growing in a closet with 400W HPS lamp & fan. I was fert'ng every other day with 19-24-24 at one fourth recommend strength. I stopped fert'ng about 10 days ago. I've gone to plain water every other day for the past week now. I think I'm about two weeks to harvest... What should I do??
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Old 04-21-2008, 07:19 PM
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Did you apply ferts to the foliage?
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Old 04-21-2008, 07:35 PM
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Nope... diluted in the water.
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Old 04-21-2008, 11:01 PM
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spider mites......
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Old 04-21-2008, 11:20 PM
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spider mites......
A very real possibility. You need to get some pyrethrin bombs. 3 of them set off 6 days apart....or some junk. Many those pics will give me nightmares.
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Old 04-21-2008, 11:22 PM
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With dots that big, you'd have to be seeing webs by now. Maybe it's hard to see them under the red light. Mist the plants and check for webs if you have bad eyes or no magnifying glass. Bummer.
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Old 04-22-2008, 06:34 AM
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No mites... no webs... If I can't control this problem should I harvest what I can??
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Old 04-25-2008, 12:47 AM
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No mites... no webs... If I can't control this problem should I harvest what I can??
I have the same exact problem,, just started 2 days ago,, I have checked my plants very carefully with my magnifying glass,,,no mites... I PH my water at 6.5,, use reccommended nute solution.. Just started using 1tbsp per gal. of blackstrap mollasses 5 days ago. But I have never heard of the mollassses causing this problem,, Can someone expierenced pls jump in to this thread.
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Old 04-25-2008, 12:51 AM
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those burnt tips are caused by to much nitrogen which is locking up other nutes...the spots look to be a mg defenciey of the worst kind....i would flush with ph water day 1...water normall next 4-7days then hit with a tablespoon or 2 of epsom salts(depending on size of medium)...then regive ferts at 1/3dose on the 8th day...then resume normall feedings an waterings but keep the nutes down to at least 1/3-1/2 dose...peace az
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ayo fdd azgrow is comming at me with them personalt attact man.
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Old 04-25-2008, 01:50 AM
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Ill give it a shot,,thanks for fast reply,,
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