I know it's hard to do but I would wait. The ground won't be frozen for long. How big is it? I would not want to work in it if it is not secure. Better safe then sorry.

It is hard to wait. I am afraid if I dont do it now it wont get done it time to use this season. It is the Harbor Freight GH that is 6x8

Yes, I had planned to build a concrete foundation so I cleared the snow, got out the shovel and tried to dig a hole. This was in the first week of February. After working for about 15 minutes, I had chopped a groove about a shovel width wide and 3 inches deep. I then changed my plan and built a treated wood foundation. You can see the construction photos at the link below.

Here is a link that might be useful: Greenhouse Construction

Oh my goodness!What a setup, picture perfect. I can only dream of a greenhouse like that, and all the accessories! Wow!
I can not tell from the pic's, did you drive 2x4's into the ground to attach it to the ground?

There are diagonal braces at the corners of the foundation frame that have rebar rods pounded into the ground through them. The base was also filled with a couple of cubic yards of rocks and gravel, so it is not going to blow away.

That is what I am thinking of doing. I hope once DH sees your pic's he'll feel better about it. Thank You!

I would love to have a setup like that but am not knowledgeable enough to start up such a wonderful setup. I was also wondering if one could build in winter. I live about 30 miles west of Green Bay and we do still have snow.....until after the weekend. I want to get in mine also. I am also thinking of seeing if a handyman in town can build mine as my son has to many irons in the fire as it is.
I live in a city so will not have to much of a problem with wind. Just cold.
I suppose I could go out with a hair dryer and melt the snow faster. teehee.

Oohhh a hairdryer! Now dont go giving me ideas!!!!

Would a bonfire be quicker and more fun?