Ice Cream Cake Nice Purple, but some Yellowing.

MochaJoe

MochaJoe

Member
Ice Cream Cake Indoor, Gavita1000e, closed room CO2 1200 ppm - Today is day 55 of 60 to 62 days. Its been a great run, no bugs, no PM, looking like a large yield, however, I'm noticing a few plants are turning very yellow, basically dying, while most others are maturing to the proper purple coloring of this strain. The buds on these yellowing plants are good size and otherwise look healthy but they remain very green, not darkening to purple, like they are supposed to. I stopped feeding the room about 5 days ago, only providing CalMag and RO water, but this problem was showing before that. I even fed the yellowing plants nutes after flushing, thinking maybe root lock. No change. Probably too close to harvest to make much impact but thought it was a worthy puzzle to post, with the hopes someone has seen this type of thing before. Thanks. Images below show what most of the room looks like and then the yellowing plants.
 

Attachments

MustGro

MustGro

Well-Known Member
Yeah that yellow looks off to me, more like a burn than the plant's natural end. Quick guess is nute lock but need more info. What medium are you growing in? PPM, PH, how you put fluids on if you're in soilless. Are the yellow ones using fluids like the others?
 
green_machine_two9er

green_machine_two9er

Well-Known Member
I think you have multiple things happening here. The last pic looks the most worrisome to me. Do those leaves that are yellow all the way into bud just pop off? Or maybe take a pic right in the cracks there if the bud.
 
MochaJoe

MochaJoe

Member
MustGro said:
Yeah that yellow looks off to me, more like a burn than the plant's natural end. Quick guess is nute lock but need more info. What medium are you growing in? PPM, PH, how you put fluids on if you're in soilless. Are the yellow ones using fluids like the others?
Click to expand...
Yeah, agreed. Not so normal, for this strain.
typical PPM during flower is about 1240. I tend to let the PH drift up towards the end, 6.6 or 6.7. I grow in Nectar for the Gods #8 soil and all these ladies are in the same medium. One thing I'm thinking is that it could be related to air movement. The two plants that appear to be suffering the most from this are being hit the least by the fans. I dunno... just a theory.
 
MustGro

MustGro

Well-Known Member
MochaJoe said:
Yeah, agreed. Not so normal, for this strain.
typical PPM during flower is about 1240. I tend to let the PH drift up towards the end, 6.6 or 6.7. I grow in Nectar for the Gods #8 soil and all these ladies are in the same medium. One thing I'm thinking is that it could be related to air movement. The two plants that appear to be suffering the most from this are being hit the least by the fans. I dunno... just a theory.
Click to expand...

"Nectar for the Gods Soil Blend #8 is a variation on Nectar’s #4 potting mix, this blend has the same ingredients, with 50% perlite for increased drainage. Suitable for daily feeding. Mixed in small batches. Coir fiber is rinsed on-site with Oregon rainwater and buffered with limestone to reduce salts. After blending and bagging, soil sits unwrapped and covered for up to 30 days to activate, compost and then go dormant, to avoid HOT soil.
Ingredients: Sphagnum peat moss, perlite, coir fiber, pumice, mycorrhizal fungi, yucca meal, kelp meal, bone meal, diatomaceous earth, clay, basalt, oyster shell (for pH adjustment), humus and lime (for pH adjustment)."

So you're adding nutes to get 1240 PPM or that's a soil sample that reads 1240 PPM? PH of 6.5 to 6.7 in soil is fine.
 
MochaJoe

MochaJoe

Member
MustGro said:
"Nectar for the Gods Soil Blend #8 is a variation on Nectar’s #4 potting mix, this blend has the same ingredients, with 50% perlite for increased drainage. Suitable for daily feeding. Mixed in small batches. Coir fiber is rinsed on-site with Oregon rainwater and buffered with limestone to reduce salts. After blending and bagging, soil sits unwrapped and covered for up to 30 days to activate, compost and then go dormant, to avoid HOT soil.
Ingredients: Sphagnum peat moss, perlite, coir fiber, pumice, mycorrhizal fungi, yucca meal, kelp meal, bone meal, diatomaceous earth, clay, basalt, oyster shell (for pH adjustment), humus and lime (for pH adjustment)."

So you're adding nutes to get 1240 PPM or that's a soil sample that reads 1240 PPM? PH of 6.5 to 6.7 in soil is fine.
Click to expand...
My schedule peaks at about 1240 ppm of added nutes at mid-flower. All these plants get the same thing. I typically lean towards less nutes rather than more, but have never seen any burn in the many runs I've had with this strain. In my experience nutrient burn tends to just start at the tips and if you catch it, doesn't progress much beyond that, once you've flushed and adjusted. I've never encountered this type of thing before so I'm confused.
 
MochaJoe

MochaJoe

Member
green_machine_two9er said:
I think you have multiple things happening here. The last pic looks the most worrisome to me. Do those leaves that are yellow all the way into bud just pop off? Or maybe take a pic right in the cracks there if the bud.
Click to expand...
Yeah, once they are into the bud they're green, which makes me think its related to either moisture or light. Here are two more. Didn't want to turn the lights off again, so sorry for the hideous color.
 

Attachments

MochaJoe

MochaJoe

Member
MochaJoe said:
Yeah, once they are into the bud they're green, which makes me think its related to either moisture or light. Here are two more. Didn't want to turn the lights off again, so sorry for the hideous color.
Click to expand...
This is the main kola on this plant that is showing this yellowing. The smaller branches look fairly normal.
 
green_machine_two9er

green_machine_two9er

Well-Known Member
MochaJoe said:
I have more experience with bud rot than I care to mention. Never seen bud rot express in this way, but just to not dismiss you, I did take a very close look and, no signs of anything like that. Thanks for caring enough to mention it.
Click to expand...
When I felt with it it was the thickest top colas and the fiery symptom was leaves just dying from bud out. Hard to see well with your hps pics. I’ve found turning your flash on can help
 
MochaJoe

MochaJoe

Member
green_machine_two9er said:
When I felt with it it was the thickest top colas and the fiery symptom was leaves just dying from bud out. Hard to see well with your hps pics. I’ve found turning your flash on can help
Click to expand...
Yeah, that's the way it typically goes. In this case, the leaves are dying from the edges inward and the stems are still vibrant and green where they enter the bud. True, hard to see with my shitty pix.
 
MustGro

MustGro

Well-Known Member
MochaJoe said:
Yeah, agreed. Not so normal, for this strain.
typical PPM during flower is about 1240. I tend to let the PH drift up towards the end, 6.6 or 6.7. I grow in Nectar for the Gods #8 soil and all these ladies are in the same medium. One thing I'm thinking is that it could be related to air movement. The two plants that appear to be suffering the most from this are being hit the least by the fans. I dunno... just a theory.
Click to expand...
Since it's the ones not getting much airflow; I'm wondering if those plants are hard for you to get to. Is your access restricted to the yellowing plants? Sometimes plants like that get less fluids, less washing and build up nutes in the soil. How's that for a theory?
 
You must log in or register to reply here.
Top