An autoflower that won't flower

VikTheViking

VikTheViking

Member
VincenzioVonHook said:
I elaborated a bit above lol.
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Man, perfect info - thanks a lot :D

It sure is a tricky situation, but I like your suggestion of lowering the intensity to save the main colas and make sure to maximize penetration to the lower branches. That has got to be the best option at this point!

It's so funny how some grows just go from start to finish without issues and rewards you with a big yield.. and then sometimes you just stumble upon problems you've never experienced before. My ego is riding a roller coaster, hahaha! "Man, I totally got the hang of this!" next grow: "the fck is happening?!" :lol:

Constantly learning!
 
Nutty sKunK

Nutty sKunK

Well-Known Member
VikTheViking said:
Mango Isle, sounds tasty! :D
"Ranges from watermelon and strawberry bliss to citrus, mango, and papaya."
Regarding the light, I have the same issue with this one - can't raise the light any higher and currently the tallest branches are approx 10" from the light, which is why I'm thinking of dimming it down to 90% or something like that. My light is on 18 hours, so maybe that's causing more damage than good if it's 10" from the tops, on full blast, for 18 hours per day.. But I'm not sure(?)


My intuition tells me that the plants don't like the light intensity. the fan leaves that are above the trellis/scrog all have tip burn and the leaves closest to the light are fading in color.

The fan leaves on the lower part of the plant look perfect - no signs of deficiencies, yellowing, burnt tips - nothing.

Starting to look quite unhealthy here.. faded color, burnt tips..
View attachment 5195595View attachment 5195596
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Here’s my theory.

Autoflowers are more and more becoming like photoperiods.

You have a large portion of photoperiod genetics in that plant, more so than other autoflowers.

In nature. Were plants are made. Sunlight decreases in fall and is never direct and constant; time of day, cloud cover etc.

Photoperiods as we know need 12hrs or less to
Flower. So in theory (might not be true) they can’t withstand as much intense light.

Some autos don’t express it as much. But I’ve noticed a few be quite sensitive to too much light.

If it’s yellowing now cause of light stress those leaves will be gone in a couple weeks.

Personally I would lower the lighting hours. Not done it but read that autos bud well in 12/12 so use that at a lowest mark to go to.

Good luck
 
VikTheViking

VikTheViking

Member
Nutty sKunK said:
Here’s my theory.

Autoflowers are more and more becoming like photoperiods.

You have a large portion of photoperiod genetics in that plant, more so than other autoflowers.

In nature. Were plants are made. Sunlight decreases in fall and is never direct and constant; time of day, cloud cover etc.

Photoperiods as we know need 12hrs or less to
Flower. So in theory (might not be true) they can’t withstand as much intense light.

Some autos don’t express it as much. But I’ve noticed a few be quite sensitive to too much light.

If it’s yellowing now cause of light stress those leaves will be gone in a couple weeks.

Personally I would lower the lighting hours. Not done it but read that autos bud well in 12/12 so use that at a lowest mark to go to.

Good luck
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A very valid theory! And yes, this has to be one of those plants which has more photoperiod in it, since it's been growing and acting way different from any other autoflower I've grown.

I'll try dimming the lights now, maybe in combination with decreasing the light schedule to see how it reacts :)

Thanks a lot for your input!
 
C

Cynister

Well-Known Member
This girl is now on day 90 from seed (took the pic about a week ago). She didn't flower until her 10th week and now she's exploding. They're plants and they don't know they are supposed to be done in 8 weeks or whatever. I wouldn't put a whole lot of stock in breeder's times, they'll just be done when they are done. I've been following this thread since the beginning and keeping my mouth shut as I know these can go very long sometimes. Good looking grow, keep at it!
 

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VincenzioVonHook

VincenzioVonHook

Well-Known Member
Cynister said:
This girl is now on day 90 from seed (took the pic about a week ago). She didn't flower until her 10th week and now she's exploding. They're plants and they don't know they are supposed to be done in 8 weeks or whatever. I wouldn't put a whole lot of stock in breeder's times, they'll just be done when they are done. I've been following this thread since the beginning and keeping my mouth shut as I know these can go very long sometimes. Good looking grow, keep at it!
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That's and epic auto for sure. The longest veg I've ever had with an auto was around 6 weeks. I thought that was a decent run.
 
VikTheViking

VikTheViking

Member
Cynister said:
This girl is now on day 90 from seed (took the pic about a week ago). She didn't flower until her 10th week and now she's exploding. They're plants and they don't know they are supposed to be done in 8 weeks or whatever. I wouldn't put a whole lot of stock in breeder's times, they'll just be done when they are done. I've been following this thread since the beginning and keeping my mouth shut as I know these can go very long sometimes. Good looking grow, keep at it!
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Hey Cynister, I'm happy you opened your mouth and shared a pic of that awesome plant you've got, haha :D

Same as mine then, started flowering after 10½ weeks approx..
Yours is looking super healthy and productive though - great job!

Hopefully I can get mine to look a little happier by next week.. ;)
 
VikTheViking

VikTheViking

Member
TCH said:
Yeah, you've got a lot of room there to fill er up. It definitely can't hurt.
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Spot on! I'll take that advice and fix it right away :D
I should have done that as soon as I saw the roots popping up above the surface.. but maybe I was stoned at the time.. can't remember, haha!
 
VikTheViking

VikTheViking

Member
Happy weekend, everybody!

Update:
My girl isn't looking too good right now - seems to be a combo of both nute burn and light stress. Actually, she's looking pretty damn awful.
The top colas + the growth just underneath the center of the light are turning yellow, almost orange/golden in some areas.

I've only been using Biobizz organic fertilizers and followed their schedule, but I kinda did forget that the soil I was using already had quite heavy nutes in it. For the last week I've only used correctly PHd water with enzymes to flush/clean the roots and the medium to avoid any further nute burn.

I dimmed the lights even more yesterday to hopefully save all the top colas from being fried.

What are your opinions - which other causes could be involved here and what would you try if this was your plant? Thanks!

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Kassiopeija

Kassiopeija

Well-Known Member
That's not light bleaching, you have nutritional deficiencies. How can you flush in a time when the demands are highest? Now you need to increase feeds and give balanced NPK with lots of micros to get that on track, and best, as quickly as possible. Otherwise you will loose these leaves.
Also, if temps rH is in cheek you can give full light, that's already a huge plant that needs to care for the dim sides.
 
VikTheViking

VikTheViking

Member
Kassiopeija said:
That's not light bleaching, you have nutritional deficiencies. How can you flush in a time when the demands are highest? Now you need to increase feeds and give balanced NPK with lots of micros to get that on track, and best, as quickly as possible. Otherwise you will loose these leaves.
Also, if temps rH is in cheek you can give full light, that's already a huge plant that needs to care for the dim sides.
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Thanks for your reply!

The reason why I thought it was light stress, is because the taller the cola (close to the light), the lighter in color/more damage. Under the trellis, the fan leaves look perfectly healthy. No burnt tips, no faded color - just deep green all the way through. If it was deficiencies, wouldn't I see lighter color on the bottom of the plants leaves?

And I've got to add that the light is on 18h/day and the tallest colas are just 8-10" from the light where the PPFD is around 1100. DLI above 50 for those tops. I'm not supplementing CO2.

Cheers!
 
VikTheViking

VikTheViking

Member
twentyeight.threefive said:
Take pictures without the grow lights on. In the dark and use a flash. Do all the leaves tips look like that even lower down?
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The lower growth looks very healthy, whilst the higher up you go, the more damage and color fade.

Upper (Started with yellow tips, that became burnt tips and irregular fade):
U1.jpgU2.jpg

Lower growth (Looking healthy IMO)
L2.jpgL1.jpg

I've never before had "nute burn" and aggressive fade starting from the top when lack of nutes was the issue.
When my plants were hungry in other grows, it showed from the bottom up and didn't cause burnt tips.

Thanks!
 
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