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Grow QuestionsHello, There are copper coloured spots on many lea...

Hello, There are copper coloured spots on many lea...

Canadian_Steelheaderstarted grow question 6 years ago

Hello, There are copper coloured spots on many leaves on one plant. I have tried Foliar spraying with magnesium. But it doesn’t seem to help. There is a bit of purple in the stems as well. I gave them some cal-mag, but still there. A few fungus nats. Gave nematodes 2 days ago.

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Week 11

Leaves. Color - Mottling

Experimentgreenanswered grow question 6 years ago

Hey there steelhead, i see your spots you mention as well as the slightly red stem, however you're feeding the plants a nice lineup...so sometimes i wonder either its a too low does, or somethings not being absorbed. With all the nutrients they have an ideal range where they're absorbed, such as calcium can be taken in from a ph of 6.5-9.5, but others may be absorbed better at 6-6.8. I thinj this is why they suggest we all aim at having the ph between 6.3 and 6.8 so that way were happily meeting them all in the middle. I see your ph at 6 and probably thats not so far off to cause catastrophe but may perform better a touch higher. There's also the problem of nutrients cancelling out others if 1 is too high, like magnesium will cancel out calcium if their ratio is off. So I'd say either try increasing your dose because maybe the plants are eating a lot, or try to adjust that ph slightly. Ive heard several places mentions to be careful about using several different bottled companys, that sticking with just the flora line would help reduce the risk of staking and bad interactions because they've designed most of the products to be used together. I found this out slightly last summer when i used fox farm and remo together, it just didn't seem to be as compatible as sticking with 1 or the other. Happy growing and good luck tackling the various challenges that we all seem to face. ✌️

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BloodBathanswered grow question 6 years ago

This is one of those problems that everyone is going to give you a different answer. All of them being right usually lol. You could very well have a deficiency of one or more things. From what I can see from the information provided and the pictures is that you have a phosphorus deficiency. I know this because you well into your flowering cycle and not providing enough phosphorus. This plant really needs its phosphorus as soon as you switch your lights to 12/12. Feed it your choice of nutrients with a higher P and K value. Remember Up, Down, and All Around for NPK. It's corny but it's correct and easy to remember. Also im gonna add that I noticed you wrote about a few fungus gnats! That could very well be a huge part of the problem. I advise to do as much research about pests as you can and figure out your perfect way to get rid of them. Ive had pests before and I use my own solution of neem oil and dawn dish soap. The best thing you can do is purchase lady bugs. They will keep everything in your grow in check. I 100% recommend a higher feeding of phosphorus and potassium along with lady bugs and a light pest solution. Good Luck buddy! I know you'll fix the issues and be thriving and no time!!😉

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CRiSPrGrowanswered grow question 6 years ago

hey there you have all the symptoms of phosphorous deficiency . purple stems , copper colored splotches, some dark and brown spots, mottling patterns , leaf tips affected, yep, that P deficiency ! you're going pretty light on the nutes as it is, but doing everything right including foliar spray which is good. you can probably double the diamond nectar which is mag sulfur, and flora bloom which is P/K no problem. to get the juices flowing consider a chelation agent, but it's optional. as long as you up the P/K the problem should stop spreading. Hope this helps ! 🚀

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Athosanswered grow question 6 years ago

Rust spots, eh? I could not see it on the pictures. Well if they are on the new top leaves it is calcium deficiency. If they are on the lower leaves along with uneven yellowing that start from the tip, then it's potassium deficiency. The later is easy, give it bloom nutes (or PK booster). The former is trickier, since calcium deficiency is present weeks before the symptoms show on the leaves. Your base water should be around 0.5 EC (250 PPM), if it's close to that, then it's not calcium deficiency, might be calcium lockout due excess feeding, both excess of P or K lockout calcium. So even if you correct the calcium the spots will not go away.

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