Most greens will take lower temps. Some people plant spinach late in fall before ground freezes and it will come up early spring. I have had luck with chard.

Here is my first experience: LINK

The next winter worked out okay ... I expanded the growing area in the greenhouse but had to direct-sow everything. All the transplants I had intended to move in were past transplanting stage by the time cold weather finally showed up. Many of them had just gone from the garden to the kitchen. Sowing seed indoors gave me greens in February.

I think I am okay this year. Sowing seed in the garden continued later so I should have transplants and I can sow a little seed, as well.

Steve

Here is winter, 2014-15:

LINK

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Steve

It might be worth a try making a tunnel out of the dog run though you won't need it for awhile. I wouldn't invest in greenhouse film just yet but builders plastic would be ok to start with. I have successfully winter gardened for a few years. It does take a fair amount of time.

Loose leaf lettuces do phenomenally for me - I grow them mostly in small-medium sized containers. I have plans to grow 6 varieties this fall, along with two types of bok choy and 3 varieties of radish. I'm done with spinach - it just won't thrive for me.

I have had plenty of lettuce and radishes survive temperatures into the 20s completely uncovered.

This isn't quite on topic but if it doesn't freeze before September 23rd, there they will be, in the fall garden ッ .

So, this is "succession gardening." Harvesting sweet onions and broccoli began in July. The squash and zucchini transplants went in, right in the middle of the beds. The broccoli was in a bit of a holding pattern but is gone now. The onions closest to the cucumbers were pulled first. None remain that aren't now flat on the ground -- meanwhile, the cucumber vines are merrily trailing off the beds

I have a bed of bush beans, also. Benjamin Bunny ate on them pretty good after I sowed the bean seed in what had been a bed of peas. Then, Hedwig ate bunny - at least, I think that's what happened. Anyway, bush beans can take some cool weather, if not frost.

Waaay too many cucumbers right now but the olde vines will play out before fall. I nearly burned up the early planting of zuks when their sprinkler failed during some record heat. The plants didn't die but those aren't doing too good.

Steve

Smoke here is very unhealthy to hazardous to health. Friday night yellow and no sun. This morning must be just very unhealthy with a red sun. 40 degrees when I looked supposed to be patchy frost last night then up to 90s on Tuesday. Been an unpredictable weather year.