Needs Nitrogen?

[sirtalis]

The ones in the front are turning lime green. Both the same strain. They've recovered from russet mites but now seem to have either N deficiency or something else.

Any thoughts? I just foliar fed them seaweed today to see if they spring back a bit. Considering getting some fish emulsion for fast N.

 

[raggyb]

The ones in the front are turning lime green. Both the same strain. They've recovered from russet mites but now seem to have either N deficiency or something else.

Any thoughts? I just foliar fed them seaweed today to see if they spring back a bit. Considering getting some fish emulsion for fast N.

View attachment 5421662

I have no outdoor cannabis experience but I will play. First of all, nice plants. I only see the deficiency on newer leaves except for the one on the right foreground so I'm going to say not N def on the others. Are they all same strain? So theoretically I think you are looking for an immobile nute on the left one, (ignoring the bottom yellow leaves), so that is most likely Ca def. If you add Ca I don't think you also want Mg why they sell those together I don't know, they are antagonistic to each other. And maybe pH has a role to play but it has to be way off I think for N def so maybe right front is a light strain. But maybe you can give info on your water, soil mix and feed and give some idea of what pH is. At any rate, can I have your garden? Good luck!

Edit: sorry looked again I see prob Ca def on top of right foreground also and you said those 2 are same strain.

 

[sirtalis]

I have no outdoor cannabis experience but I will play. First of all, nice plants. I only see the deficiency on newer leaves except for the one on the right foreground so I'm going to say not N def on the others. Are they all same strain? So theoretically I think you are looking for an immobile nute on the left one, (ignoring the bottom yellow leaves), so that is most likely Ca def. If you add Ca I don't think you also want Mg why they sell those together I don't know, they are antagonistic to each other. And maybe pH has a role to play but it has to be way off I think for N def so maybe right front is a light strain. But maybe you can give info on your water, soil mix and feed and give some idea of what pH is. At any rate, can I have your garden? Good luck!

Edit: sorry looked again I see prob Ca def on top of right foreground also and you said those 2 are same strain.

Thanks, my water source has high Ca so I think this could be more of a Mg issue.

I haven't fed them anything aside from the soil they were planted in...recipe 420 from E.B. stone. So tap water and their existing soil.

I feel like there's a chance that the high Ca in my water is locking out the Mg and N, which is turning them light green.

The two lime green ones are a sativa leaning strain and apparently this can happen to them. I've started foliar feeding Epsom salts yesterday but the yellowing is coming in super fast - they were darker green a week ago.

 

[sirtalis]

 

[carl24bpool]

I would say poor drainage / overwatering. Hard to say which outdoors. Then leading to a nitrogen deficiency since lower leaves are yellow on left plant.
Feed light nitrogen and see if they darken.

 

[raggyb]

Thanks, my water source has high Ca so I think this could be more of a Mg issue.

I haven't fed them anything aside from the soil they were planted in...recipe 420 from E.B. stone. So tap water and their existing soil.

I feel like there's a chance that the high Ca in my water is locking out the Mg and N, which is turning them light green.

The two lime green ones are a sativa leaning strain and apparently this can happen to them. I've started foliar feeding Epsom salts yesterday but the yellowing is coming in super fast - they were darker green a week ago.

Yeah you might be right about Mg not Ca, I go back and forth on those a lot not being sure. I'm no expert but that leaf you show close up does seem to me again on first guess either Ca def if you didn't say your water is high Ca, or I've read somewhere that sometimes a papery brown spot is P def. They're big plants so look a little hungry but if really sativa sativas I would also be careful adding too much. Best of luck

 

[sirtalis]

I would say poor drainage / overwatering. Hard to say which outdoors. Then leading to a nitrogen deficiency since lower leaves are yellow on left plant.
Feed light nitrogen and see if they darken.

Man, I probably should have added more perlite to the mix when planting.

The main reason I am keeping them in pots is for airflow. When they're elevated off the ground like this I seem to get less bud rot (very humid climate).

I'm debating cutting the fabric and planting them in the ground so the roots can breathe. There is definitely a drainage problem, and my sandy soil would help.

 

[sirtalis]

Fish fert is helping a bit.

 

[raggyb]

Fish fert is helping a bit.

View attachment 5423357

Awesome! Do you think they might be saying thanks I needed that but please don't give me too much (leaf curling)?

 

[sirtalis]

Awesome! Do you think they might be saying thanks I needed that but please don't give me too much (leaf curling)?

The leaf curl is a remnant of the russet mite attack from a couple weeks ago. Judging by how the yellow is progressing I think they need another round of nitrogen after letting the soil dry out a bit.