What is this? Phosphorus Deficiency?

[flexy123]

Those are late into flowering, about 6 weeks or so. Note the slightly reddish large fan leaves. Can it be P deficiency? I am feeding them with Plant Magic Oldtimer Bloom (3-5-4). The plant otherwise looks healthy and everything. Just wondering why those two leaves turning reddish.

 

[Rifleman]

Natural to have older larger leaves yellow and die as flowering gets later.

 

[fanleaf]

Lookin good for 6 weeks into flower. Keep it up!

 

[flexy123]

Natural to have older larger leaves yellow and die as flowering gets later.

Yes I know, but those have become reddish? Maybe it's the strain and nothing to worry?

 

[Rifleman]

 

[fanleaf]

Could very well be the strain. Heres how my AK47 just finished.

At 6 weeks into flower I probably wouldn't worry too much at this point even if it is a def....Have your buds swelled and what do your trichomes look like? I ask because if your a few weeks out from finish you will need to flush for a few weeks and let the plant eat it's stored energy depending on what fert's you have used.

 

[flexy123]

Ah...I don't believe in flushing that much, I am feeding all organic. Last time I checked her trichomes I don't think I saw any ambers so it looked like it still had maybe two weeks to go.
The other one on the right (with the dark, purple buds) however confuses me, it's a "Fruit Spirit" which is supposed to also still go about two weeks, but the bud hairs are basically all brown and I think I see some ambers too. I put those up for flower on September 24th, so it wouldn't make sense that they're ready already.