My dad had been growing for awhile now but he is running into this on a few of his plants. He hasn’t changed anything from previous successful grows. Water, soil, nutrients is all the same and fresh.
These were started indoors until about two foot tall and planned outdoor. Zone 5B. Watered daily, no water logging off soil. All three were started from seed and all the are different strain. My dad is very experienced with this but I am not. If I left anything important out please let me know and I’ll get the info from him.
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If he replants outdoors yearly, does he use the same spots ? If so the soil may have become acidic or basic. You check soil pH if it’s a repeat grow area. If it’s planted in like a field ,there may be other plants competing with or cooperating with the plants
He plants outdoors in 2 gallon pots. Every grow he replaced the soil. The brand he uses is happy frog. Only three of his plants have this the other four are ok.
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That’s a good point. I don’t think he has been here. After you mention that, two of these plant are in cloth pots.
Outdoor? I don’t suppose you live somewhere that has been getting a stupid amount of rain lately? It could be nute lockout from soggy roots.
My first thought being an avid gardener of veggies. The soil drains well, definitely not water logged.
Looks like nute burn to me.
Other four plants are on the same regiment without the issue.
Are they the same genetics? Some plants just eat less.
I second this opinion. It looks like the early stages of nutrient burn. It could be as simple as not mixing the nutrient solution enough so the bottom of the barrel is hotter than the top. My first suggestion to every grower is always less is more. I like to use super soil up until flower for that reason specifically, and then just use supplemental nutrients twice weekly until flush. Unless you are growing commercial crops on giant plants or are in a CO2 supplemented environment then it is unlikely the plants are getting large enough to require large amounts of supplementation.
He does supplement his tent grow with C02. I will mention this to him and see if cutting back nutrients helps.
It definitely won’t hurt the plants. Cannabis is exceedingly resilient, so 2-3 straight waterings to flush should clear out any excess salts if you’re using NPK nutrients. If you want some killer mixed medium nutrients I can’t recommend Remo’s nutrient line enough. It is super easy to use, you can just get away with using the basic line no problem for home grows, and it is EXTREMELY consistent. Worth every penny in my opinion.
One other thought I had. If you are using city water then make sure you are leaving the water out for 24 hours minimum before mixing nutrients or watering the plants. The additives to city water can cause all kinds of weird issues, especially chloramine. The concentration of chlorine/chloramine can vary at different times so it is best to just let the water sit for an extended period if you don’t have access to well water or an RO system.
I think he is going to try the flush and see how that does. My folks have the great well water. He used to test the pH prior to every water but it was always at an ideal level.
Everyone here was so happy to help out with this. This community is great. Thank you everyone.
looks like phosphorus deficiency potentially, not all seeds are the same.
what strain?
https://www.reddit.com/r/trees/comments/x41c8j/new_chart_of_what_cannabis_leaves_look_like_with/
One blue dream One space candy One cherry pie
All hybrid strains. He also has another space candy that is doing well.
maybe the heat, everyone shaded the same all day?
See my above comment, but I will also say that Cherry Pie is notoriously finicky in my experience. I dumped that strain after two rounds because A: I didn’t like the genetic that much and B: it always got locked out while the rest of my plants were going gangbusters. Blue Dream can withstand a nuclear holocaust though. I swear you could piss in the pots and get 2 pounds off a plant.
I’ll pass this along. One of the plants seems to be bouncing back better. Wonder if it’s the blue dream.
