Yellowing at center of leaf clusters

[jfred]

Well, my little outdoor crop has been looking good.

In the last week two plants (out of six) have developed a condition characterized by leaves that are yellow and frail looking. They are occurring in the centers of new leaf clusters toward the tops of the plants, where the leaves meet the stalk...what appears to me to be the new growth. The condition has occurred on two plants of different strains (One Northern Lights and one Afghan strain).

I don't think it's basic nutrition or watering: adjacent plants are looking fine.

Another factor to consider: A couple of my tomato plants are showing a similar condition (yellowing at point where leaves meet stalk) but a lesser degree.

Any help would be greatly appreciated.

[jackel]

its ur water. chlorinated water? perhaps its missing something? u could have a water test done

[jfred]

I suppose it could be the water, but how do I understand the fact that these two plants are in a row of other plants of the same variety, all of which receive the same water (rain and irrigation) and are looking just dandy?

Thoughts? Would a photo help? How do I post pics?

[jfred]

Okay, lets see if pictures are worth more than words.



Above, Afghan hybrid with normal leaves.

Afghan hybrid with affected leaves.

Northern Lights with normal leaves.

Northen Lights with affected leaves.

The affected plants are #3 and #5 in this row of five plants.


Thanks again.

[jackel]

that is pretty crazy looking. so i researched it, and the best thing i could find is temp stress. plant is stressed due to temp changes .maybe a sudden burst of cold air outside? some plants are more resilient than others.

[jfred]

I appreciate your help, man, but it's June in Texas and the "sudden bursts of cold air" are way behind us. Sudden bursts, yes. Cold...alas, no.

The fact that the same condition is showing on tomato plants makes me think it's a trace-mineral deficiency and not something unique to cannabis (It's certainly not caused by a bit of chlorine in the water). I'm going to apply some Ironite to the whole plot and some a 12-10-5 vegetable fertilizer with good trace-mineral content (S, B, Cu, Mn, Md, Z) to the affected plants (including tomatoes) and see what happens.

I'll let ya know. Aside from the yellowing (which I'm hopeful will respond to minerals) How do the plants look to you? These are the first I've grown and don't have anything to judge by.

[jackel]

u check em for sex? or they clones?

[jfred]

I have not checked them for sex.

All were planted from seeds. Growing outdoors my understanding is that they will not begin to produce flowers (and thus show sex characteristics) until later in the summer -- 6 weeks from now minimum, when the days begin to grow shorter. Does that sound right to you?

How early do you think I might be able to determine sex on outdoor plants?

Thanks

[jackel]

most cases they will show preflower (sex) after the 7th node outside. which by the size of those plants, u can prob see sex.

[stiky dodo dumb]

look on your veggies for bugs, the tomatow flowers or peppers i grew tomatillos this yr and they all have thrips. have you sprayed anything yet? i found safers made a new ready to use insect soap w/seaweed extract, that was at ace hardwear -first look at your veggie flowers -im dont know it thrips but i have them real bad, my weeds a few yards away sepirated by a small shed but they dont get near as bad as my pepers.
does it even look like insect damage?

[jfred]

I'm pleased to report that my crop has responded very well to mineral treatment (Iron + trace). Attached is a photo of the formerly pale leaved Northern Lights, and a shot down the row.

I may have mentioned that some of my tomatoes were showing the same mineral deficiency (or at least the same symptoms). They, too, have greened up after the mineral treatment.

Here's the NL with new growth


What this means, of course, is that ALL my plants (including not only the pot and tomatoes, but also beans, corn, squash, basil and peppers) were marginally deficient in iron as well. Everything has taken off since I supplied the supplements. I'm particularly pleased to see the cannabis sprouting new grow the on all the stems. (You may be able to see the difference in the previous shot down the row compared to this one.)

Here's a shot down the row


ONE LAST THING: Please take a look at the photo below and advise me if this a male or a female plant. Gracias.

2

[jackel]

that is a HUGE male that is ready to bust its not!!! cover that with a garbage bag and chop it down. look for balls on the rest of them.

[jfred]

Dude, thanks. I owe you on that one.

None of the other plants look ANYthing like that one, but I'll continue to monitor them.

Question: The male that I pulled up this morning -- does it have any potential for enjoyment...if I dry the leaves?

Thanks again.

[jackel]

no. will be more harsh than enjoyable.

[jfred]

no. will be more harsh than enjoyable.

Indeed. Just tried some. Harsh...no pleasure.

Thanks jackel.