Outdoor Growing in WA - flowering...help...

Seems like the time of year to start planning an outdoor grow. I want to do an outdoor grow in wa state this summer. My question is about the 12/12 flowering stage. Does it have to be at least 12 hours a day of "total darkness " for the plant to revert to flowering, or will the plants revert to the flowering stage when 12/12 is the sun going behind the horizon but the sky is still illuminated? Using the chart below - when do you think the plants would start the flowering stage, and when do you think harvest time will be? I really appreciate all your answers!
http://www.filmwashington.com/weathe...ise_sunset.pdf
I'm new here and have really been enjoying the threads.

They usually start flowering around august. Hard to say when they finish because different strains have different flowering times. Some 8 weeks and some 12 weeks. So you have a month approx. that it can vary.

Start late august or early sept.

Thanks! According to your replies my plants will have an average low of about 37-43 F the last couple of weeks of flowering? Will it kill my plants? Of course this is average and there is a good chance of a morning frost in my area.

Just move back one month and all should be good. I gave you my times. That was for OR. That would make it late July or early August. You never mentioned if your stuff took 2 or 3 months to flower. That should also be taken into consideration.

I see, thanks mr ganga. It seems like this plant has good characteristics - strong, grows low, and produces high thc with a high yield. THC Bomb Marijuana Seeds Can I ask what strain you grow in OR? Are busts common out there with an outdoor grow? I've read its a good area to grow.

I'm coming closer to a plan. I think lowryder 2, or a lowryder blend will be good for my situation. From seedling to harvest its only 8-9 weeks for this autoflowering strain. Genius. I can start inside to sex them under 18-24 hour light, which is only about 7-12 days. (I'm guessing flowering light like hps or a 2700k cfl is best???) Next I will go out in the field with some worm castings and prepare the holes they will grow in. I'll germinate about early june and by early august I will be ready to harvest. This will take care of two things I'm worried about - the rain almost every day in sept, and I wont have to worry about all the hunters running around during hunting season. Seems good for my situation, what does everyone think? May seem odvious this is my first grow. I dont have the luxury of doing a total grow indoors since I will live in federal land this summer and the penalties for cultivation are more severe. Thanks all.

"I'll germinate about early june and by early august I will be ready to harvest".

That is some fast growing stuff. What kind?

Its an autoflowering strain. Autoflowering strains will flower very early even under 24/7 light. Lowryder is the only autoflowering strain I could find. You can read about it here. http://www.headsite.com/shop/lowryder_2_cannabis_seeds-p-988.html
There are also cross breads of lowryder I found that carry all the same traits but a better yeild and more potent. Of course the yield is a lot less, but this plant will only grow to 17-24 inches - although I have read they can grow to 30 inches sometimes. I DONT want a 5 foot tall plant. I feel much safer growing a plant outside if its only 20 inches tall.