overwintering out of zone
OK, i know i am not the only one to go down this road, so i hope to glean some insight. i am forever trying things a zone or more south of me, with varied results. but this year i planted a Jiro Persimmon, right out in the middle of the yard, no micro-climate for that one. since they are rated for z6, (i couldnt get any sunset info) i thought what the heck. well now ive decided that i would like to put forth some effort to help ensure its survival. has anyone tried a portable greenhouse during the winter for something like this. i would not heat it, just thought that the suns warmth and the wind protection may help. i was thinking of setting it up end of Dec.and opening it up in March. that should "cover" the -10 to -20 degree nights.