Grow light outdoor?

I just started a plant from some bagseed a couple weeks ago but winter is about to hit and the days are gonna be too short to keep it alive so what i was planning on doing is builiding a greenhouse and putting a grow light in there.
I need some input on what light you guys think will work best for this.. I was shooting for LED because of the efficiency to run it
Im gonna just turn it on right when it starts to get dark and keep it going for about 4 hours.

Cfls and clamp lights from home depot work too

temporary work string light...
they make them in 5 and 10 bulb string

People aren't going to wonder WTF? Your neighbors? And why not just dig it up and move it inside? You don't even know if male, female yet?

i should say they do make a lot of light pollution...i live in the boonies so no neighbors...
doublejj used one in a residential area...
good luck op...

I'm growing auto's under 24 hour light. Sunlight approx 7am-7pm and cfl 7pm-7am. My back porch is practically a greenhouse and is screened from neighbors though. They just started to give off a nice aroma in the last couple of days. It can be done just be cautious!

Regardless of them being autos, dont all plants need even a little dark period for the buds to really fill out and stink?
Its one plant and it the greenhouse will be in between our house and a shed so its not gonna be very visible.. Im not just gonna slap the entire setup in the middle of my yard for everyone to see haha and if it is that bad, i can get some sort of cover to put over it.
That temp work string light will put out enough light for it?

Edit: That temp work light is way to long for me, i need something thats just like 1 or two lights that will be enough to keep the plant growing

Again...clamp light from home depot and cfls

i use grow lights in my greenhouse all the time ..mostly winter....but then again i aint growin nothing illegal.......

Im just gonna take indcolts advice, i just need em to survive winter so minimum will do.. thanks man