Non-flowering auto

[Surfer Joe]

I have two autos that are about 9 weeks old. One started flowering about week 4 but the other one has never flowered.
I had them on 24/0 for the first three weeks then I switched to 20/4 for the rest of the grow.
It seems to be vegging nicely, and it has a handful of single female pistils scattered around its branches, but it never took off flowering.
Being an autoflower seed, does it have a limited lifespan?
Can I leave it vegging for 3+ months and then try flipping the lights to 12/12 and see if it flowers, or is there a chance that it will be genetically defective and hermie or just die of old age before it can go through the flowering period?

 

[umbra]

It is probably not an auto flowering plant. It could be anything, there is no way to know without setting it to 12/12

 

[2RedEyes]

Yes, I’d switch it over to 12/12 if it’s big enough...switching should not bother the one already flowering...it’ll keep on flowering...

 

[Surfer Joe]

Thanks, all.
So, even if they're acting like photos, don't they still have the auto genes that give them a limited life span?
I read that you couldn't use autos as mother plants or take clones because of their genetic clock.
If I wait until I harvest its companions, it will have been growing for about 14 weeks, so can it live another 9+ weeks to complete a flowering?
I don't want to reduce the light on the flowering ones just to accommodate this one.

 

[2RedEyes]

Your assuming that it is indeed an auto but it’s not acting like one...I doubt the one that is flowering will mind the shorter day...