One warm south-facing wall for espalier -- what to plant?
I've got a number of apple trees in my zone 5b/6a NY garden. I also have one warm south-east facing wall (cedar siding) against which I've been toying with the idea of another fruit tree, espaliered. How difficult would it be to grow plums, peaches, apricots, or sour cherries? I'm an amateur so I'd likely go with whatever is going to be easiest, as I think all these fruits would be delightful to have fresh. I'd also appreciate variety recommendations. And finally, how difficult is it to espalier? I have a book and it looks pretty straightforward, but I know books have the tendency to gloss over many real-world issues. Thanks for any advice.