Yellow - Orange Spots on leaves

[Born-on-420]

Greetings Everyone,

I’ve got something that I can’t identify on my leaves. There are yellow spots on the lower fan leaves of one of two “skunk” plants grown from seed. They have been in 12/12 for about 5 weeks and are flowering nicely at the upper branches.

Any thoughts from the community?

Many THANKS in advance,

born-on-420

 

[al70]

hi born on 420, I can't believe nobody responded to you, I've looked at your photos and I can't make it out, it looks like a bug problem check the underside of the leaves and check the medium, especially when you water, sorry I can't be more help, hope you get it sorted, goodluck.

 

[Born-on-420]

Latest development yellow spots

Latest development yellow spots

Hi al70,

I was wondering if anyone would have any ideas. I’ve looked at the under side with a magnifying glass, and only see the same yellowish orangish spots, however the issue has progressed and now I’m getting brown curled edges on a few upper leaves, only on some branches of the same plant. A friend in Colo. has been looking at my issue too. He mentioned a Ph imbalance as a possible avenue of research. Here’s a photo of the latest

Many thanks for your reply,

born-on-420

 

[al70]

ok 420, in the dearch box at top of the page type in yellow spots, ye should find your answer there, goodluck.

 

[mastacheeser]

That first pic makes me think mites

The last one looks like heat/light stress

Either way get that ph right

 

[Born-on-420]

Hi al70,

That was my first action when I joined IC. I didn’t see any thing definitive, and didn’t want to try anything that might make my situation worse. However, since the new symptoms, I am looking at righting the PH and see where it goes,

Thanks for the reply,

I’ll keep in touch,

born-on-420

 

[Born-on-420]

Mastacheeser,

I will check my high-low temps and see if I am getting to warm. I have a 600w HPS light, and the plants are a good two feet below that light. I’m hoping that isn’t the issue as I can’t lower the plants or raise the light.

thanks for the thoughts,

born-on-420

 

[Granger2]

It would be wise to do a close root inspection just to eliminate the possibility of root pests. Good luck. -granger

 

[Born-on-420]

Hi Granger2,

Humor a noob here, (only my second crop) what is the procedure for inspecting the roots? I will also search for this on my own. It’s always good to cultivate new acquaintances,

thanks for the reply,

born-on-420

 

[Citizens Aux PD]

Bro, if you want good opinions from us doctors, then you've gotta give us details.

I know you've spread out some of the details through your posts, but in future please understand that we need to know at least the following:

Soil or hydro? In this case it looks like soil. Was it already fertilized when you bought it?
Nutrients? What? How much per litre/gallon? How often given?
When was the last time you gave nutrients?
Light? In this case 600 HPS. How far away? 2 feet.
Any fans?

PICS---We need pics of the entire plant in natural light or just regular room light, but not under the grow lamp. We need to see the entire plant from bottom to top. Yea, and of course we need detailed up-close pics (which you've provided).

The spots on your leaves sort of look like mites/moths, but I'm not sure. Can you scrape off the white dots with your fingernail? How many leaves have those white dots?

The curling leaf...it looks like nute burn...How many leaves are like that?

2 feet (24 inches) from the light should be okay, but how warm or hot does the back of your hand feel when placed at canopy level?

Here's hoping things turn around for you and all ends well!

 

[Sat X RB]

I 'm thinking there are two separate issues here. I can't identify the first exactly but often see similar on my outdoors which come to nothing. always took the spots to be insect damage that did no long term harm.

when leaves are burned like that there is similar/parallel damage to the tips of the roots. BUT ... whether the CAUSE of the burn is at the roots (eg mites) or the leaves are reflecting damage from soil abuse (eg nute burn ... it's not yr lights ... and incorrect pH would show more generally over the plant) it's too difficult to say.

pls tell us more about yr grow.

 

[Born-on-420]

Greetings C A PD,

Thanks for the reply:

Full details, the photo’s are about 6 days apart, only one of two plants coming from the same seed strain have this issue, both are planted in soil, a mix of bio soil, and regular potting soil, good drainage at the bottom, I have run off in the trays, and the surfaces of the soil never look to wet, but the surface can be dry looking.. after a full day.
Nutes: only blood meal and a local Dutch variety of multi-purpose flowering plant fert.
Blood meal only, a few mg in the soil once a month or so, and the local brew for flowering fert only a tablespoon per 5L.
Nutes were given two days ago, 1 tablespoon to 5l
Light is a 600hps and the plant in distress is 26 inches away.
I have an exhaust fan, and a circulation fan plus an intake vent without a fan. It has been awesome beach weather here in Holland on the coast. I know my internal temp got a bit high a while back, but this issue is a recent development.
It’s Saturday tomorrow, I will bring the girl out just before the lighting cycle and get some pix.

I tried to scrape the spots thinking they were some external splatter of some sort, and they were part of the leave they were not weak spots at the time. Most of those leaves have yellowed and fallen, and the flowering has increased in any case. Just worried it is a momentary victory.

There are about 3-4 leaves curling on 3 of 4 high up on the main branches of this plant as of today, it has progressed, one branch is free of the issue. I try to rotate, not only on the axis, but positionally in the room as well.

The light doesn’t feel especially hot at the canopy top, and two other plants are thriving there.

Thanks for the thoughtful question, and the timely reply,

born-on-420 out.....

 

[Born-on-420]

Sat X RB,

Another member asked for details, and I answered all questions there. Just for the record, this is my second crop, and am on a extremely lo-budget, and it’s lo-tech until I turn the corner with a harvest or two.

I am grateful for all the advice from the community so far, it was slow starting, but I have lots of input now.

Thanks again for your thoughts, always appreciated!

born-on-420

 

[Citizens Aux PD]

I look forward to your pictures.

Remember:
There is usually a delayed-reaction...In other words: The problem we notice TODAY was usually caused 3 -5 days ago.

The main thing right now is to not over-react. Don't add any medicines even if they are organic. No molasses. No honey. No flushing. No nothing.

When you add some pics, DO add at least ONE of the healthy plants next to the sick ones, okay?

Best of luck.

 

[Born-on-420]

Photos of plants

Photos of plants

C Aux PD,

I’ve uploaded photos, now the healthy plant has some brown tips!? Not in the same photo, but in the same location, same time of day.

And yes, UFO rocks! Love to love is awesome,

born-on-420

 

[mastacheeser]

Def overfert.

 

[Born-on-420]

best next step?

best next step?

Thanks mastacheeser,

What’s the best plan of action? Give just clean water until it balances out?

For my own knowledge, how did you make the diagnosis?

Many thanks for your reply,

born-on-420

 

[mastacheeser]

The burnt curled leaves combined with you saying it started fairly quickly after your last watering.

Just water until it balances out is prob best. If things start going fast quick, your might have to to a flush

 

[Born-on-420]

thanks for the insights, going in a little black book, Will continue just water, which is tap water that sits for at least 3 days in 5l containers that originally contained de-ionized water.

I’ll post back in a few days

 

[Citizens Aux PD]

Def overfert.

I agree.
Something has offended them from within.
I would stop using that all purpose flowering stuff.
Myself, I would pick the burnt leaves off.

I can assure you that you will still get great buds without fertilizer of any kind. If you still feel impelled to use some, only use the organic stuff like BioBizz or Nirvana Bloom. Both can be found at Amazon for about 10 quid each.

Please do keep us updated. I'm sure things will work out fine.