First year fig grower here so this is my 1st winter storing figs.  Thanks to some extremely helpful suggestions from members in another post of mine for cuttings that had stopped growing, I now have most of my cuttings still growing vigorously.  On an impulse buy I picked a very cheap (low quality) green house from harbor freight.  Question is, should I use it or is it pointless?  My thought was I could get an extra month of growing season out of the cuttings.  Green house is 6x6.

Here's a link.  http://www.harborfreight.com/lawn-garden/greenhouses-supplies/6-ft-x-6-ft-greenhouse-97439.html

Pics of cuttings below.

I was thinking (hoping) I could keep them growing thru October in there before putting them in storage for the winter.  

You'll definitely have higher daytime temps but your night time lows wont change as much unless you heat the thing.  It's not well insulated so that might get expensive.    To determine exactly what the difference is you could measure.  The windier it is the less the night time temperature difference will be.

I agree with Bob C in that you'll only get a few degrees of protection from nighttime lows, without heating. 

There are some tedious and/or labor intestive things you could do if you were so inclined.  The imagination abounds, but you could start with adding one or more large dark colored containers of water.  These would heat up during the day, and at night would shed that heat into the greenhouse.  For very cold nights, you could even place containers of heated water in there.

On the cold, clear, still nights, even this flimsy plastic greenhouse will help a lot against the effects of radiative cooling, particularly if you also cover them with plastic or a blanket at night as an extra protection.  But on windy nights, it will help less.

You may as well try it.  Just make sure you open it up on sunny days, or else you'll either cook them or prevent them from going dormant properly.  Even a cold, sunny day could see hot temperatures inside one of those things. 

I had one of those things you have, except a little smaller, and I put mine on casters and wheeled it into the garage on cold nights.  A lot of hassle though. 

Good luck, let us know how it goes.

It looks like it won't do much.  Why did they make it green??  That'll absorb some of the energy that the fig leaves need, leaving more of the wavelengths they can't use and cheating them out of some of what they'd otherwise get.

Mike   central NY state, zone 5a

I don't know why they did that.  I was wondering the same thing.

I'm in the Seattle area.  I'd guess that next month we could see soe night time temps around forty, maybe high 30's here and there.

I think that is just supposed to protect your plants from a frost.  Like putting a blanket over your plants.  Not to keep them out of dormancy

Having grown up and lived in Gig Harbor for years, I would guess the thing
that will shut down your figs for the season is low ambient light as much as
temperature. Some years it gets pretty dreary in the PNW by end of Sept.
Greenhouse won't do anything for light intensity. I remember avid PNW gardeners
putting HID lighting in their greenhouses in the fall to ripen tomatoes.

That is the weakness of the USDA zones. I now live in Tucson, right on the
edge of zone 9a~8B. Same zone as Seattle, there couldn't be a bigger
difference in growing conditions. Even though Tucson gets almost as cold
as Seattle on the coldest nights, our cold snaps last only a couple of hours and
we grow citrus and saguaro rather than rhododendrons and douglas fir. I miss
Gig Harbor a lot in June, July and August. Not so much in December, January, February.

It's a great place for a frenchi

Chrome, not sure what to say about the green covering, but a more normal transparent covering would be a big help to you both in the fall and particularly in the spring.

I'm south of you, east of Vancouver. My little trees were in my greenhouse this past spring, enjoying 75 degree days while the temp was 55 outside. My greenhouse is unheated and uninsulated, but nevertheless, it really was like gaining an extra month as the trees broke dormancy earlier and eventually the figs ripened earlier than they would have outside. I was so pleased that I'm adding a little 54 sq. foot extension to the greenhouse right now. That's what happens when you hang out here on the forum with these fig addicts; you find you need more trees and then more space.

That said, I've read that the HF greenhouses are very flimsy and you may want to invest in structurally reinforcing yours if you plan to leave it up as the fall winds hit.

Definitely a poor quality greenhouse.  I'm in my townhouse with almost no backyard, so my thought was to get something fairly inexpensive and temporary.  Plan is to move to a house with a proper yard this winter.  Then I can invest in a larger better quality greenhouse.  My goal with this was to add a month of growing season.  I learned a lesson and up potted and fertilized very late.  Should have done it 6 weeks earlier.

I'm on the fence whether I should return it....