Magnesium deficiency?

PeachyBuds

PeachyBuds

Member
Hey guys,
just had this pop up yesterday. About half of the plants look like this and it's mostly upper leaves that are showing it. I'm guessing magnesium deficient, but I wanted some second oppinions. I just fed them with a little molasses with their water to help some (I know it's got a few micro nutes and potassium). In the case of a mag deficiency, will the leaves come back to the regular color or are they shot? is there a good natural way to combat it or do I just need to go get cal-mag or mag to add?

Thanks!
-Peach
Snapchat-7928603251590696003.jpg Snapchat-1287940206152909053.jpg Snapchat-6100700082241442364.jpg
 
TommyDuhCat

TommyDuhCat

Well-Known Member
I cant quite see in the photos, but if you have a mag deficiency, youll usually have a lot of purple in the stems and internodal veins. Im not thinking you have too much growth nutrients because the leaves are a nice bright green.

As i state in a lot of threads i post in, im still a bit of a rookie, but id give a modest feeding of growth nutrients that has some trace elements and get them some nitrogen. Your leaves aren't bad yet and should bounce back. Once you have necrosis in the leaf margins the leaves are still useful, but wont recover.

Ill try to check back and see what you did and if it worked. Good luck!
 
kmog33

kmog33

Well-Known Member
PeachyBuds said:
Hey guys,
just had this pop up yesterday. About half of the plants look like this and it's mostly upper leaves that are showing it. I'm guessing magnesium deficient, but I wanted some second oppinions. I just fed them with a little molasses with their water to help some (I know it's got a few micro nutes and potassium). In the case of a mag deficiency, will the leaves come back to the regular color or are they shot? is there a good natural way to combat it or do I just need to go get cal-mag or mag to add?

Thanks!
-Peach
View attachment 3578439 View attachment 3578440 View attachment 3578441
Click to expand...
It looks like most of the plants in those pics are fine. Is it only a few leaves on each plant that are like that or all over? May need better pics. Definitely not a mag deficiency.
Maybe need a little n.

Sent from my iPhone using Tapatalk
 
PeachyBuds

PeachyBuds

Member
Dr. Who said:
What are you feeding?
How much?
How often?

Iron and Sulfur - Possible N and Mg def.....starting too
Click to expand...
I've been making my own plant food (molasses, used coffee grounds, and rock phosphorus turned into liquid feed) but I haven't fed in a few weeks. Reason being that I had too much nitrogen for a bit (a lot of the middle leaves have the claw and are pretty dark) and they just got re-potted into bigger pots with 50/50 FF Happy Frog and Ecoscraps, so I figured they'd be good for a bit -- guess not haha. The new leaves do look a bit light though, so it could need a bit of a nitrogen boost, and I think you may be right about sulphur. I know this odd discoloring isn't Nitrogen for sure though... it's happening in a much different way thanow an N deficiency from what I've seen. Just based on the pattern it's happening in and the color it's changing to, it looks a lot like a micro nutrient or maybe a potassium deficiency. Just my thoughts on it, but obviously time to give em a slight dose of macros and a decent dose of micros!
 
PeachyBuds

PeachyBuds

Member
kmog33 said:
It looks like most of the plants in those pics are fine. Is it only a few leaves on each plant that are like that or all over? May need better pics. Definitely not a mag deficiency.
Maybe need a little n.

Sent from my iPhone using Tapatalk
Click to expand...
Yeah, mostly they look good, but as time goes, they're all getting that same odd discoloring. it's just on the upper growth (about the top 4 or 6 nodes) they may need a little N based on the color ofor the new growth being kind of light, but from what I've seen, this discolorationew doesn't look like an N deficiency to me.
 
PeachyBuds

PeachyBuds

Member
TommyDuhCat said:
I cant quite see in the photos, but if you have a mag deficiency, youll usually have a lot of purple in the stems and internodal veins. Im not thinking you have too much growth nutrients because the leaves are a nice bright green.

As i state in a lot of threads i post in, im still a bit of a rookie, but id give a modest feeding of growth nutrients that has some trace elements and get them some nitrogen. Your leaves aren't bad yet and should bounce back. Once you have necrosis in the leaf margins the leaves are still useful, but wont recover.

Ill try to check back and see what you did and if it worked. Good luck!
Click to expand...
Okay. I didn't know if mag deficiency would have purple for sure, or only if it was alongside cal deficiency. I'm thinking that's probably a good plan -- a little of everything. From my experience so far though, these little white widows are quite touchy with their nutes, so I'm thinking I'll start with a pretty small dose of macros and a decent dose of micros ( I'm still thinking the discoloring spots are some kind of micro deficiency or maybe potassium.)
 
Terry385

Terry385

Well-Known Member
Is that lite green and dark green on them leaves in the first pic
PeachyBuds said:
Hey guys,
just had this pop up yesterday. About half of the plants look like this and it's mostly upper leaves that are showing it. I'm guessing magnesium deficient, but I wanted some second oppinions. I just fed them with a little molasses with their water to help some (I know it's got a few micro nutes and potassium). In the case of a mag deficiency, will the leaves come back to the regular color or are they shot? is there a good natural way to combat it or do I just need to go get cal-mag or mag to add?

Thanks!
-Peach
View attachment 3578439 View attachment 3578440 View attachment 3578441
Click to expand...
 
PeachyBuds

PeachyBuds

Member
Terry385 said:
Is that lite green and dark green on them leaves in the first pic
Click to expand...
Yeah, and that's what I'm trying to figure out... not sure why it's changing. the closest looking things I've found is magnesium, potassium, or sulfur deficiency. Thoughts on what it could be?
 
C

Connoisseurus Rex

Well-Known Member
Usually potassium deficiency will look like a slight nute burn, but not always. I don't see that in this pic, but there is a slight "burn" in the 2nd pic at the top. That could have been prior to your problems though.

Almost looks like a slight ph fluctuation. How's your soil ph?
 
Jimmy Sparkle

Jimmy Sparkle

Well-Known Member
I have had this same thing happen to my plants. For me,those lighter areas began to get leathery then dry and burnt. What I did was over feed accidentally of course and I torched the shit out of my plants. Like an idiot I threw everything but the kitchen sink at them thinking ," oh shit some deficiencie) and then I realized!!!! That's was my issue, yours???? Just saying mine looked like that prior to the bullshit that ensued.
 
PeachyBuds

PeachyBuds

Member
Connoisseurus Rex said:
Usually potassium deficiency will look like a slight nute burn, but not always. I don't see that in this pic, but there is a slight "burn" in the 2nd pic at the top. That could have been prior to your problems though.

Almost looks like a slight ph fluctuation. How's your soil ph?
Click to expand...
It actually has fluctuated a lot on ph. this last watering was at 6.2 from the bit of runoff, but it's been as high as 7. the burns are from too much nitrogen last time I fed -- fair number of claws too.
 
PeachyBuds

PeachyBuds

Member
Jimmy Sparkle said:
I have had this same thing happen to my plants. For me,those lighter areas began to get leathery then dry and burnt. What I did was over feed accidentally of course and I torched the shit out of my plants. Like an idiot I threw everything but the kitchen sink at them thinking ," oh shit some deficiencie) and then I realized!!!! That's was my issue, yours???? Just saying mine looked like that prior to the bullshit that ensued.
Click to expand...
Yeah, i though of that too, but it just seems like such an odd discoloring for any toxicity.
 
PeachyBuds

PeachyBuds

Member
Terry385 said:
don't like to say it
i have and it sucks Broad mites can't see them
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Shiiiiit lol. Honestly, looking at other pictures, that sounds pretty spot-on. these are super young, and have another few weeks til going to flowering. how do I kill the little bastards off?
 
Jimdamick

Jimdamick

Well-Known Member
To me it looks like quick new growth. In 2 days, if the leaves stay the same color, which I doubt as I'm betting on, then you might want to get some more N into the game (Calmag +)
 
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