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Please help with brown spots and leaves that curls upwards
AnnCathstarted grow question 4 years ago
Hi, can anybody help me with this? My Bluematic Auto is in 2 weeks in flower and shows brown spots on the upper leaves. The tips of the leaves curl upwards.
Use Biobizz grow, bloom, top max and bio heaven. Was it to much???
Thanks a lot
Anna
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Leaves. Curl up
Leaves. Other
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Ganjagrandaddyanswered grow question 4 years ago
Hi mate. looks like a calmag deficiency. when using led or coco , they both can leech the mag from the nutrients unfortunately. We can supplement with a good calmag product . if allowed to continue , they will be denied vital my and be held back. the leaves will get more spots and eventually die off. dont worry though as it is an easy solution. keep ph 5.8 for coco and feed daily to run off. if in soil then a slightly higher pH of 6.0 -6.2 is OK as the soil will buffer slightly. Remember autos often don't feed heavy too. A great strain choice and I loved my big lady of this one. beautiful smoke too.
Good luck buddy
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FreshCoastOrganicsanswered grow question 4 years ago
Here is a link to compare images and common traits for PK deficiencies!
https://growingexposed.com/cannabis-doctor/phosphorus-deficiency/
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FreshCoastOrganicsanswered grow question 4 years ago
This appears to be a phosphorus deficiency, potentially caused by nutrient lockout or not enough PK!
I would check the ph of your runoff, it should be about .5-.8 lower than the water going in. I would also check the EC of your soil as well to see what kind of readings you get. Without knowing the runoff ph and EC it’s extremely hard to tell if you’re over feeding. But over feeding typically leads to burnt tips and leaves, not so much brown splotches!
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