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Grow QuestionsLeaf problem with autos in the flowering phase

Leaf problem with autos in the flowering phase

Middleliferstarted grow question 2 years ago

This started on my northern lights strain and I'm now getting it in my gelato plants that are close to done. Anyone know what this is? I'm growing in a tent, airpots, using fox farm soils and recharge is all. All plants are autos, they all seem to develop this in the last week's.

Middlelifer

Middlelifer

Middlelifer

Middlelifer

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Leaves. Color - Black or grey

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Coopmcanswered grow question 2 years ago

https://www.bonzaseeds.com/blog/identifying-cannabis-plants-problems/amp/

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Coopmcanswered grow question 2 years ago

Looks similar to phosphorus diffitency buy this chart

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Coopmcanswered grow question 2 years ago

https://growlightinfo.com/rust-spots-on-leaves-during-flowering/

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Coopmcanswered grow question 2 years ago

https://www.greencultured.co/blight-cannabis-diseases-when-growing/

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Middleliferanswered grow question 2 years ago

I'm just using plain water the last few feedings, this all came on this past 2 weeks. I used calmag in mid grow to stop what i thought was a calcium problem. 2 feedings with that. Still this came on them. Thanks for all the input, I'll try to figure this out from all the comments

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AsNoriuanswered grow question 2 years ago

Cold air or / and bad vpd ( check vpd chart for weed ) can cause issues with calcium absorption ... They love higher temps, target 25, makes magic with good RH , check by vpd what humidity you need for your stage. All the Best !!!

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AsNoriuanswered grow question 2 years ago

Calcium issues, but if you have such leaves ... Are you using any root booster still ??? All the Best !!!

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Middleliferanswered grow question 2 years ago

Temps are 75-80F humidity never over 35%. I'm pulling in dry cold air from outside and venting it outside as well. If that helps diagnose this problem better?

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Coopmcanswered grow question 2 years ago

Also remove any infected leafs so they can’t spread it to I Nom affected leafs and plants

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Coopmcanswered grow question 2 years ago

Rust or blight Kocide or any Copper Oxide fouler spray

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