how long do you imagine you can keep an annual alive????

key word.. annual ...

now.. as in many recent posts.. some annuals are actually perennials.. once you start climbing the zone ladder ...

sooooooo .. unless you tell us what plants.. we cant really answer the question ... you dont really expect us to list every z6 and above plant.. do you ???

and yes.. you have to heat it.. or it will stay z6.. which might not get you much more than outside ... but for avoiding winter wind ...

i like your thinking.. you just haven't given us much to go on ...

ken

Though this is the Annual Forum, a very large percentage of the plants that are spoken of in here are actually perennials (full fledged), used AS annuals. Thus, are pretty commonly and easily over wintered.

I'm curious as to the 'greenhouse in the basement' comment!

Yes, let's have some more information!

Do you mean an actual GREENHOUSE or one of those shelving units with tent-like plastic, i.e. a household greenhouse? Totally different issue...