So I was in Home Depot the other day, picking up some odds and ends and just happened to walk through the Garden Center. For 100 bucks there was a gorgeous 8 ft. tall Oshio Beni. Three others, for the same price, were barely 5 ft tall; I just couldnÂt resist. HereÂs the thing though, they are hardy to zone 5b and I live in 5a (which is just barely removed from 4b). Now, I know that the large home stores are not the best places to buy trees, since they are typically ordered in bulk from parent stores in different locations. But like I said, I just couldnÂt resist this large, beautiful, fully branched Japanese maple that now looks great next to my house. My question is, how do I keep the thing alive during the winter? Obviously, due to itÂs size I canÂt bring it in. Does the fact that it is so large have anything to do with how well it can tolerate a string of sub-zero winter days?