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Help my sick plant
Jmaninthemidde420started grow question 5h ago
What’s on these dying leaves? I see these black dots on my leaves on the top but not the bottom of the leaf. Which is why I don’t think it’s mites but some type of fungal growth. I’ve plucked most of the leaves containing this off
Solved
Week 10 likes
Selkotanswered grow question 4h ago
hey 👋
as u said It does not appear to be mites damage (no clean bites or typical suction marks)
however, the grayish-brown spots and general discoloration of the leaf blade most likely indicate a physiological problem, not a pest.
I would suggest a magnesium or calcium deficiency, possibly aggravated by an unsuitable pH.
The deficiency should not encourage you to fertilize more. If you have a pH problem, there are probably accumulated salts.
To solve your problem, start by thoroughly rinsing the substrate with the adjusted pH (6.3/6.5 if you are using soil, 5.8/6.2 if you are using coco).
Then, for watering, use Cal-Mag (1 g/L once a week), which you add to your watering water with adjusted pH.
Avoid excess nitrogen or PK during correction, as they aggravate the blockage!
To find out if the treatment is effective, observe the new leaves: the spots will not disappear from the old ones, but the new leaves should appear green and healthy.
enjoy ur grow😉