You can also stock garden seed for one zone colder but since your garden is a yearly thing you don't have to do as much preplanning.
Your trees will be in the ground for at least two years, if you are planting saplings, before you see any results. Five is more realistic. Nut and fruit trees with a fish pond (don't forget the cattails and wild rice) is the easiest and quietest way to have food.
Have some Chicago Fig trees in the basement to protect them. Will plant in June. The cherry trees planted 2 years ago are rated to -40F. December 2016 saw -27F in my backyard.
Hey, over here.......
Ping-a-ling.....
Potential Agricultural Impact of the Eddy Minimum
Anthony Watts / May 12, 2011
Guest post by David Archibald
I will be giving a lecture in Washington in early June on my way through to the Bahamas. Following are the slides that pertain to the agricultural impact of the current de Vries cycle event the Eddy Minimum.
https://wattsupwiththat.com/2011/05/12/potential-agricultural-impact-of-the-eddy-minimum/