Can anyone help diagnose nutrient deficiency?

[Luke5501]

I am pretty sure this is a deficiency; sulfur, nitrogen, potassium, or magnesium. I can’t quite figure out which. I am new and currently using synthetic nutes and soil. They were doing so well up until this last week or so (week 3 into 4). I just bought organic nutes through foop. My plan is to switch to see if that’s the issue. Also is it too late to LST (tie down)

 

[Imzzaudae]

Magnesium. Open link and save it to your browser for future reference.

Cannabis Leaf Symptoms Quick Guide With Pics | DRCANNABIS.IO

Use cannabis leaf symptoms pictures to quickly diagnose your marijuana plants. Find the pictures that resemble your plants and learn how to fix the problem!

drcannabis.io

 

[Bdubs]

what is that white stuff?

 

[Imzzaudae]

Must be Canadian. It's snowing at my place as well.

 

[Luke5501]

what is that white stuff?

That’s just glare from foliar spray.

 

[Luke5501]

Must be Canadian. It's snowing at my place as well.

Close Minnesota.

 

[Luke5501]

Magnesium. Open link and save it to your browser for future reference.

Cannabis Leaf Symptoms Quick Guide With Pics | DRCANNABIS.IO

Use cannabis leaf symptoms pictures to quickly diagnose your marijuana plants. Find the pictures that resemble your plants and learn how to fix the problem!

drcannabis.io

Damn okay cool. Thank you for the help. I’m curious, did you just know right away from experience that it’s magnesium? Or just looked at the guide? And hey is it too late to start tying down? I’m so unsure of where and how much bend I should be putting on it.

 

[Luke5501]

Magnesium. Open link and save it to your browser for future reference.

Cannabis Leaf Symptoms Quick Guide With Pics | DRCANNABIS.IO

Use cannabis leaf symptoms pictures to quickly diagnose your marijuana plants. Find the pictures that resemble your plants and learn how to fix the problem!

drcannabis.io

Great guide. All the ones I could find were illustrated.

 

[LoveGrowingIt]

Yep. Mg deficiency. I use Epsom salt for that.

Also is it too late to LST (tie down)

I'd fix the Mg problem first. The plant looks bushy, though, so I'd get started on pruning and training soonish.

 

[Sunasun]

I am pretty sure this is a deficiency; sulfur, nitrogen, potassium, or magnesium. I can’t quite figure out which. I am new and currently using synthetic nutes and soil. They were doing so well up until this last week or so (week 3 into 4). I just bought organic nutes through foop. My plan is to switch to see if that’s the issue. Also is it too late to LST (tie down)
View attachment 2079047

You're giving her more light than she can handle right now. That's why she's so bushy her leaves are also showing white tips from bleaching. In addition, her leaves are curling upward to further reduce light processing.
Tldr
You're killing her with too much light.

 

[Luke5501]

You're giving her more light than she can handle right now. That's why she's so bushy her leaves are also showing white tips from bleaching. In addition, her leaves are curling upward to further reduce light processing.
Tldr
You're killing her with too much light.

So should I move lights up or reduce schedule?

 

[Sunasun]

So should I move lights up or reduce schedule?

Move lights up distance wise or turn down intensity if possible. Either would be sufficient, I'd start by doing both.

 

[Luke5501]

Move lights up distance wise or turn down intensity if possible.

Okay. Thank you for the help man! I’ll move them up now.

 

[Luke5501]

Yep. Mg deficiency. I use Epsom salt for that.


I'd fix the Mg problem first. The plant looks bushy, though, so I'd get started on pruning and training soonish.

Okay. Yeah I got all the stuff to fix the issue. I want to see how they react, then plan on pruning and starting LST. Thank you for the help. Much appreciated.

 

[Imzzaudae]

Damn okay cool. Thank you for the help. I’m curious, did you just know right away from experience that it’s magnesium? Or just looked at the guide? And hey is it too late to start tying down? I’m so unsure of where and how much bend I should be putting on it.

Hello again Luke
I grow real living soil organic outdoors in the summer.

Country Boys EZ Organic Grow

I started with a cutting of wild grass. You can just as easily do this with lawn clippings in a 20L bucket. Filled a 55 gal drum 3/4 full of wild grass and fresh cut alfalfa. 2 nice scoops of 2 year old compost. Added 2x20L buckets of Microbial solution and topped the barrel off with rain...

www.thcfarmer.com

Off season. Something a little more specialty indoors. I spend hundreds of hours studying a year. Over many years I have acquired a few links like the one I posted for you. It's nice to have information like this available that I can share or when I need it, weather that be for my own plants or when I'm offering advice in the forum.

The answer to your question is that I have been growing for a few years and for the most part recognize what a plant is trying to tell me on sight. Yes there are times I reference my collection of sick plant links.
As I offer advice in the forum many hours every day. I try very hard to offer sound advice people can trust.
You can trust that link it's good information.
Ron