I live in Up-Up-Upstate NY and we have a lot of snow !!!!! During the harsh months (Jan, Feb, & Mar) the critters have a hard time finding food. Is there some type of "above ground level" perennial plant that I can use to supplement their meager forage. Bear in mind that there will be over 2 feet of snow cover, so clover, rape, oats, etc would be impossible to get to. Something like small trees or bushes which are nourishing!! At present, they come right up to the house and "snack" on my foundation plantings of yew and cedar, which is NOT that nourishing for them AND it's wrecking my plants. Years ago, I raised (or at least tried to) sweet corn in my garden. I know they like it cuz I NEVER got it to mature (they ate it all) and was long gone by mid-Oct. Just trying to make it a bit easier for the critters !!!!!