Some strains flowering.. some not... still vegging?

this will be my third grow. ive never seen something like this but.. ive got some blue widow and ak47Xnorthern lights which are well into flower.. then ive got 2 other strains which are white rhino and strawberry cough.. one of them is flowering fine and one still looks like its pushing out new growth. it just has preflowers at the nodes.. just two per side with two stigmas. the one that is not flowering has big leaves coming way out that are quite a bit thinner than the others that are flowering which im assuming as a sativa. i know these take longer to flower. they have been under 12/12 for a month. do sativa strains take over a month to start flowering at 12/12? i know i dont have light leaks because the others are flowering fine. i dont know which is which because i got the seeds off a buddy of mine. they smell like breakfast sausage.. really spicy. are these things ever going to flower? maybe someone can tell by the pics what the problem is. thanks for the help in advance.

im gonna get a vid so as to see a little better.

well nm.. this site doesnt host vids. :/ hope the pics can help someone help me.

maybe the plant is confused? try going 11 on 13 off.

typoerror said:

maybe the plant is confused? try going 11 on 13 off.

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would that mess the others up maybe to go hermie?

Ive found in my experience, that more indica dominant strains tend to go into flower slightly earlier then sativa's. A month of 12/12 and still no flowering eh? When flowering, plants are NOT supposed to be disturbed what so ever during dark period, that means no lights from anywhere, that includes door cracks, windows etc. Have you ever checked on your plants during their dark period? You may be stressing them out causing them not to flower.

stonerman said:

Ive found in my experience, that more indica dominant strains tend to go into flower slightly earlier then sativa's. A month of 12/12 and still no flowering eh? When flowering, plants are NOT supposed to be disturbed what so ever during dark period, that means no lights from anywhere, that includes door cracks, windows etc. Have you ever checked on your plants during their dark period? You may be stressing them out causing them not to flower.

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na man.. if that were the case.. none of them would be flowering. like i said.. its only one of the strains that isnt flowering. like all of the ones that arent.. are all the same. everything else looks normal. i havent once opened that door when lights are off. im gonna try the 11/13.

11/13 will not hurt your plants at all. many people run 11/13 exclusively.

i run 11/13 for the first week of flowering with a 15 minute decrease in light every week. im down to 9 hours on a week and my girls are finishing up nicely.