New plant issues, discoloration between veins

For context, I was having some yellowing leaves:


I noticed today that some laves started looking different but it seems light(the sun was out so this discoloration seemed very minor or did not exist(so it was rapid).

There is at last one other leaf like this and they are at the near top and relatively new(long fan is about 4 inches).

What deficiency is this? It looks to be magnesium but I just added some Epson salt a few days ago along with some nitrogen(to potentially deal with the yellowing which I wasn't sure if it was old leaves dying or nitrogen deficiency).

Are you using water soluble nutrients,and what type .Did you mix the Epsom with water.Its starting flower and it takes food at this point.Plant looks good so far if your fixes work you will do fine.GL

Well, about a week and a half ago I did put some NPK and Mg in some of those foliar sprayers I had and sprayed the plant a little. Before I was just putting the Epsom on top of the soil(sprinkling it around) and then spraying it with water.

It does seem to be flowering which is odd since it's still getting something like 13-14+ hours sunlight. The "flowers" are starting to really thicken up. It seem every day I go out they are about 15% bigger or so. It's sorta looks like this(per stalk... but there are like about 10 stalks or so).




or



or

but mainly it's just the pistil and not quite as developed looking. No trichomes though. I guess it really looks close, as far as the flower, to the first pic.

I've been giving it a lot, I feel, of NPK + Lime + Magnesium and I've always read that a little goes a long way but maybe it's not enough and I've been mainly doing it around the outer parts of the plant so maybe it's not getting enough since it's outside and in a raised bed. I was thinking that most likely most of the roots are around the trunk so I'm probably not giving it as much as I think. The nuts are, I guess, water soluble since they are for gardening/plants.

I'm not measuring anything out though, just guessing based on nothing but my guesses. The P and K are granules that are sorta like BB's and are pretty hard. They are 0-0-45 and 0-0-60(super triphosphate). The nitrogen, I think, is actually some Miracle grow stuff I had... blue coated stuff that I bought somewhere. I think it's a nut mix but don't know since it's just in a clear bag.

I guess I'll mix a little epsom salt in water and pour it around the base of the plant and maybe that will help. I'm probably worry over nothing but since it's my first grow I don't know what to expect. I was also expecting it to start flowering around a month and half or so but I guess it if is flowering now and continues(and doesn't reveg) then in about a month it should be ready to harvest? This would mean, I guess, I have less to worry about any issues since it is unlikely the plant will die of something by then.

I guess I should go read up on flowering and harvesting? About how long should I expect before harvest? 4-6 weeks?

It's getting worse... many top leaves are now sowing signs of the interveinal bronzing. Most are not too bad but there some that are worse than in the picture and on the other side of the plant. Note that while the photo makes it seem like it might be a yellow color, it is more of a bronze or dark gold.

Also, when I shine a light through the leave it all looks like circular specs of various sizes. The discoloration pretty much looks very consistent throughout though. It's not blotchy and random. Seems to start in the middle between veins and enlarges. It looks more like something is getting trapped within the the leaf rather than something being deficient.

As a beginner ,you should not be using triphosphate or pure Nitrogen or any pelletized fertilizer at all.Those pellets will haunt the rest of your grow.Try a balanced water soluble fertilizer such as Jack's or Maxibloom at half strength.As far as flowering expect 10- 12 weeks once it's going.GL

Is this an indoor plant that you're shuttling between outdoor sun and in environment?

LeastExpectedGrower said:

Is this an indoor plant that you're shuttling between outdoor sun and in environment?

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I started it indoors but moved it outdoors.

The yellowing and browning has gotten significantly worse and it seems to be quite quick. A leaf can go from a little yellow or brown to dried up. Maybe I'm not giving it enough water?

I'm either over doing something or under doing something.

LambdaCalculus said:

I started it indoors but moved it outdoors.

The yellowing and browning has gotten significantly worse and it seems to be quite quick. A leaf can go from a little yellow or brown to dried up. Maybe I'm not giving it enough water?

I'm either over doing something or under doing something.

Click to expand...

I think it wasn't hardened off enough for the strength of the sun and you're burning leaves.

LeastExpectedGrower said:

I think it wasn't hardened off enough for the strength of the sun and you're burning leaves.

Click to expand...

It seemed fine during the hottest part of the summer. Seemed to thrive. Only started having any issues when I first reported it and it was just the yellowing.

I'm thinking it may be a ph or watering issue. Ph, I think, is around 7.

Maybe I added too many nutrients and they "just kicked in" and burned it hard or due to ph or watering are not able to get them. It may be the foliar spray I did too since after that it seemed when the browning showed up. Anyways, at this point there is not much to do but hope for the best cause either at this rate it won't make it to harvest or it will.

It's seemed to start pre flowering. Maybe because I put that tarp over it, it was too hot when starting to flower causing the leaves to burn for some reason(e.g. the flowers caused a lot more water loss or something letting the heat get more to the leaves since flowering is suppose to happen when it is cooler).

I seriously doubt the leaves are due to sun damage alone if at all. Plant looked great at ~110F and it's already stared to cool off yet the problem is getting worse.