I dont see what your reading. My reading material says most show sex at week 3-4 and are in full bloom by week 5-6I'd leave it alone, some of them take 7-8 weeks from what I've read
She did stretch hard for a week and half, that seems to have stopped. What I thought were preflowers, are just additional growth behind secondary. That showed on bottommost node. Attached are some pics of upper nodes with What I think are calyx's.What I've read says autos veg for the first 3 weeks and then start the whole preflowering phase. The stretch usually is about 2 weeks, you should notice some pistils, but all the grows I've seen for autos usually last a minimum of 70 days. You can harvest at 8 weeks, but I would go by the triches and not what the breeder says.
I just started giving High P nutes. Nirvana claims right on thier page of auto's, To not use N product and feed High P instead. I hope these plants from them arent a gimmick and never bloom.LOLYou'll always see preflowers(pair of pistils at each node) before you see calyx's. If you're talking about the pair of things sticking up those are just stamens. Give me a sec and I'll show you what preflowers should look like. They're called preflowers for a reason lol. Also you may want to add some more nitrogen or phosphorus to your mix(if you're using nutes). Red/purple stems usually mean a Nitrogen or phosphorus deficiency.
EDIT: I can't see which one was the picture of the pistils in the attachment manager so I just grabbed all the ones I took today that were of the top nodes.
Im using a Bloom Mix. It's 15-30-15.Nirvana also says they're plants will start flowering in 4 weeks right? It's too small to know what it is just yet, but I would guess that's where the pistils come out of(I forgot the proper name). I'd ignore what the breeder says at this point. Also plants need nitrogen regardless of strain. Go look at the plant deficiency sticky and Uncle Ben's thread about using nitrogen throughout the entire grow. It's true that autos don't need full strength nutes, but to me it looks like you have a deficiency. Lack of N slows plant growth and can even stop it completely.