Problem with autoflowering plants that dont flower.

Hi i have 2 autoflowering plants that are now 10 weeks old, and are about 3ft tall. They just keep growing but never flower, they have small white hairs which they got about 3 weeks ago. I also have to new plants which are 3 weeks old one looks like a male, could somebody confirm. The other has alot white hairs which it got after just 2 weeks which seemed a touch strange. So please could someone give me some help.
Picture one is my 3 week plant with hairs. Picture 4 is the 3 week old that i think maybe male. Pictures 2,3 and 5 are of my 10 week old plants that dont flower.

#4 looks like a male to me.

Autoflowering means that preflowers will show and let you know when to flower. Are they in 12/12?

No they are 18/6. I thought if they were autoflowering you would not have to take them down to 12/12. I think you might be right about number 4 supaleeb. If i was to take them down to 12/12, would i do this for a week and then take them up to 18/6 after week.

Hmm, give that a shot and let us know how it turns out. I honestly haven't experimented with autoflowering strains yet, so I can't offer much more advice..

click on this link...The Art of The Auto ...... you might hav more chance getting a answer on here,,,the guy seems 2 know his stuff ..have a look

I took my plants down to 12/12 for a week and then put them back to 18/6 and that seemed to do the trick to a point. My plants are now 15 weeks old and over 5ft and have flowers, but it is a slow process to get them fully flower. Their are a lot of flowers on my plant but they just have not exploded into life. I was wondering as they are now 5ft tall, should i just class them as normal plants and not auto's and adjust the time to 12/12. Any help would be gratefully received.

An auto that is 5ft tall? Never heard of one of those. I had some lowryder 2 and some bubblicious stretch to about 3ft.....5ft tall plants are an indication they're not true autos.
With automatics gaining popularity, there's been a huge influx of breeders "saying" they have autos but haven't got the stains quite right....some will auto, some will not.....when an auto doesn't show sex and flower after a month, you have to 12/12 em to force sex.......reccommend you stick to reputable auto breeders.....