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Is this a manganese deficiency?

KLAX

KLAX

New member
Note that I have edited this entire post/thread​


I no longer believe this to be a manganese deficiency, however, can't change the post/thread title.

Here are a few of pictures I took yesterday of black, mostly round dots, on many of my leaves (as well a caterpillar problem and, I believe, a spider mites issue). Oh, and I don’t want to forget the bud rot! That’s the full Monty!

You can see dark spots on the yellowing leaves as well as a few on a couple of the deeper green leaves. In direct sun those spots look more black than brown. As the spots get larger, they stand distinctly proud from the leaf surface and tend to lose their round shape becoming much more irregular. Also, in bright direct sunlight, the spots are quite shiny/reflective. That actually makes them easier to spot in direct sun.

My question is has anybody seen this? What the heck is it?

As I mentioned above, I also have a bit of a caterpillar thing going on and maybe spider mites. And yes, there’s a little webbing over one of the yellower leaves.

I grow outdoors. I used a combination of what was new potting soil last year and new potting soil. I tried to approximate a 50/50 mix. Since starting to flower, I’ve been feeding the girls Maxsea seaweed plant food, 1tsp/US gallon of water. I feed every two or three days depending on how windy and/or hot it’s been. It’s 3-20-20. Prior to flowering I had been feeding them a mix higher in nitrogen, but don’t recall exactly what it was. I attribute that to my CRS.

Maxsea has a bunch of micronutrients. I’ve been watering with the stuff for at least three weeks.

Regarding the bugs, you can see a chewed yellowing leaf as well as the tell-tale white chew marks/spots on a couple of the leaves. I’ve been finding mostly inch worms on my plants and picking them off by hand each day. I remember this from last year too. I’m retired so I’ve got the time.

Thank you in advance for any advice you may have to share.​
 

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Last edited:
Yes i'm digging them little teeny tiny catapillars out also. I got the time too ;) Have you tried unsulferated molasses yet? I use 1 tbl per gallon a tad droplet more would'nt hurt. If all else fails i give a huge drink of epsome salts 1 or 2 tbls per gallon of water. Awww it's getting close to harvest all them stinky buds attracted buggers.
 
Appears to be primarily inch worms for me, but at least one other fatter variety too. Being retired does have its advantages! :)

What would I use the unsulphured molasses for? I'm guessing the caterpillars? Thus far I've been hand picking them off each day. Grisly yet somehow gratifying to squish them.

Thank you, SoOrbudgal
 
What is the PH? What about bugs, I had a near microscopic bug a couple of years ago that made spots and tiny holes, I sprayed the area around the plants.
 
I don't have a PH tester, so I can't answer that question. I am, however, definitely going to buy one in the very near future.

I clearly have inch worms and another larger caterpillar, and, as I mentioned in my original post, I think I have spider mites too. I hand squish the worms daily. Somehow gratifying.

Rwise, you said you sprayed the area around the plants. What did you spray with?

Thank you for your comment.
 
I used spinosad, not on the plants in flower but on the ground for about 30 feet around them.
You can use ISO (rubbing alcohol) with water for the spidermites, it is safe.
 
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