How long is too long to flower?

This is my first grow and I'm looking for veterans and noobies alike opinion. So I have couple plants that are ~13/14 weeks into flower and all the normal signs that I was looking out for never really showed. The trichomes on the GSC (girl scout) I have are milky to clear, the leaves from the gallery below look very unique because they basically had a mg deficiency as the biobizz nutes didn't have them in their micro formula which I found out late. The other plant is a blue widow and it's trichomes are pretty clear throughout, both plants are bag seed that I started under CFLs before I got some proper equipment.

Some info:

Soil grown in promix bx + sheep manure
1 400w hps/mh for veg and flower
biobizz nutes inc the veg, bloom and micro
pH consistently in the 6.3-6.6 range
humidity ~45%-50% and temp ~77F
Ive been pretty consistent with watering only once the soil dries out which sometimes was 5-6 days between waterings.

http://imgur.com/gallery/pUMnB/new

I think at some point there was nute lockout which delayed the finishing time of these two plants. I've been keeping them on a light regiment of low levels of bloom and water in the hopes that it would finish up but it seems like little has changed in the past 2 weeks. Both plants have a significant fan leaves that will just crumbles to shreds yet the bud is green or dark green in most areas. So am I at the point that the plant simply didn't get what it needed in it's peak time and it won't finish any better than what it's at now or is one of those things where the plant can continue producing trichomes and those little spindles. The GSC hairs are mostly rust colored now but haven't been peeling back whereas the blue widow is like mostly all white hairs. These plants have been a learning experience for me but I wonder is there a point where you cut your plant down because it won't do much more than it has. I'm also not impatient to cut them down or anything but rather want to know what else could be done. Thanks

Once you arent producing anymore "white hairs", thats a sign shes finished. Cloudy trics are best imho...

Can't see the trichs but the buds look pretty done to me, especially the GSC

You need to harvest right time not early or late am i right?

Whip up some pictures I'm sure one of the more experienced members on here would be able to tell you if it ready

Yea I'm just confused because the leaves are dying and drying which I guess is normal but the buds are healthy and green which I assumed the trichomes are still developing as a result. But... I've been checking the trichomes on both plants with a 60x magnifying glass and the GSC tended to become milkier but no amber and the blue widow has had clear trichomes without a hint of milky ones developing but the leaves are all but gone on this one. I'm assuming it's canibalizing itself but I haven't seen any increase of trichome development or the milky/amber trichomes. I chalk a lot of this to inexperience but Ive had 3 strains growing and each one responds differently even if you do the same thing for both.

Yes thats true my boss adds nutes to his plants and I wonder the same thing. Cause every plant is and will respond to nutes diff

driel said:

Yea I'm just confused because the leaves are dying and drying which I guess is normal but the buds are healthy and green which I assumed the trichomes are still developing as a result. But... I've been checking the trichomes on both plants with a 60x magnifying glass and the GSC tended to become milkier but no amber and the blue widow has had clear trichomes without a hint of milky ones developing but the leaves are all but gone on this one. I'm assuming it's canibalizing itself but I haven't seen any increase of trichome development or the milky/amber trichomes. I chalk a lot of this to inexperience but Ive had 3 strains growing and each one responds differently even if you do the same thing for both.

Click to expand...

Exactly which leaves are so dry they are crumbling? It sounds, without pics, like nute burn deluxe but that is a shot in the dark.

Its the fan leaves. The leaves around the bud are still fine and didn't change color. I didn't get the symptoms of yellowing until week 5-6 of flower originally but when it did happen it's because of a lack of Mg in the biobizz trial line (bad oversight on my part) and I tried to help it recover with bath salts which did help. The plant isn't thirsty as the soil gradually dries out in my environment after 4-5 days, it's been getting cooler in my area with fall around the corner and I've noticed the soil and promix take a little longer to dry out. I've been looking into possibly getting some air pots that allow the soil to breathe a little easier but i'm still reading up the benefits and looking up grows with them.