Macintyre22
Member
I've noticed on one of the 4 plants I have flowering (week 6) is showing yellow spots on the top colas. Any idea what the cause of this could be?
Yellow spotting on colas? Help plz
- Thread starter Macintyre22
- Start date
Please take a picture in natural light. Until you do that it's all guessing.
TessaMaria
Well-Known Member
Just an idea because it is hard to tell with the pink/purple lighting, but I had a magnesium and calcium deficiency when I was watering with reverse osmosis water and didn’t know to add calcium and magnesium to that type of water. The deficiencies were pretty bad and I did get it under control eventually but a lot of parts (both flower and leaves) were yellow and ended up getting bud rot at those parts.
Unfortunately when the deficiency gets so bad the part of the plant changes to brown/rust/yellow color that part of the leaf or flower doesn’t recover.
I trimmed as much of it out as I could with a small pair of clippers and then did a staggered harvest on the rest of the plant. Good Luck
Unfortunately when the deficiency gets so bad the part of the plant changes to brown/rust/yellow color that part of the leaf or flower doesn’t recover.
I trimmed as much of it out as I could with a small pair of clippers and then did a staggered harvest on the rest of the plant. Good Luck
Those splotches are neither an indicator of a Ca or Mg deficiency. Although I agree if you're using RO water for hydroponics you need to add both Ca and Mg Unfortunately we don't know his substrate or what he's feeding.Just an idea because it is hard to tell with the pink/purple lighting, but I had a magnesium and calcium deficiency when I was watering with reverse osmosis water and didn’t know to add calcium and magnesium to that type of water. The deficiencies were pretty bad and I did get it under control eventually but a lot of parts (both flower and leaves) were yellow and ended up getting bud rot at those parts.
Unfortunately when the deficiency gets so bad the part of the plant changes to brown/rust/yellow color that part of the leaf or flower doesn’t recover.
I trimmed as much of it out as I could with a small pair of clippers and then did a staggered harvest on the rest of the plant. Good Luck
DrKiz
Well-Known Member
Agree with this. Same thing happened my first coco run. Not sure which it was... cal or mag or both. But adding calmag to my RO put a stop to it.
Macintyre22
Member
Only 1 plant is getting the spots, and all of my plants get f
I just mix my nutes into Distilled water, ph it to 6.4 and feed every 4-5 days
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Macintyre22
Member
My apologies, Is this any better?
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Macintyre22
Member
10 mil of each (recommendation for mature growth) I'm new to growing I hope that helps lol
Macintyre22
Member
I mix 10 ml of each into 4 L of distilled water, I don't have a ppm meter or anything just a pH meter
Macintyre22
Member
Thank you!Just an idea because it is hard to tell with the pink/purple lighting, but I had a magnesium and calcium deficiency when I was watering with reverse osmosis water and didn’t know to add calcium and magnesium to that type of water. The deficiencies were pretty bad and I did get it under control eventually but a lot of parts (both flower and leaves) were yellow and ended up getting bud rot at those parts.
Unfortunately when the deficiency gets so bad the part of the plant changes to brown/rust/yellow color that part of the leaf or flower doesn’t recover.
I trimmed as much of it out as I could with a small pair of clippers and then did a staggered harvest on the rest of the plant. Good Luck
Jay_Dreams
New Member
Nute overload. Cal mg and water. Also if you're feeling spendy start using enzymes that break up salts. Hygrozyme gets a lot of heat because it's expensive and not necessary but helps me be able to over nute and then wash my roots so it doesn't get the build up.
Much better, and your plants look good. I see no signs of nutrient burn and they don't look underfed. Looks like some light burn, how close are they to your lights? Is it possible you spilt something on them? Is this one plant right in the focus?
You need a TDS or EC meter so you know exactly how much you are feeding them. Anyway looks like you have another 2-4 weeks.
Macintyre22
Member
I thought it could be light burn too, but my white window is a couple inches taller and has no signs of light burn. They may have gotten a bit of water on them, I never considered that. I appreciate any comments and compliments. Thank you!!!
Different plant, different sensitivity, try moving this one from where it's at. Also if you spilt some of your nutrient solution it can burn. I've done that, usually with lower leaves. Otherwise, unless it advances, I'd just watch it and keep on what you're doing.
Macintyre22
Member
Thank you!!