Citrus tree spacing for espalier on South Wall
I need help! I went to Lowe's yesterday and they had satsumas for $4.25 and 1/2 off all other citrus...I couldn't help myself, even though they aren't hardy in my zone, I came home with 9 plants and no real plan.
I figure I have 2 options:
1) buy a green house and keep them in pots or
2) plant them along the south wall of the house where I can sort of espalier them so they can be covered with burlap anchored to the wall to protect from cold and wind in the winter. (we get very strong winds that tend to blow covers off or rip them part out in the open).
I really want to go with option 2 but I don't have enough space for the regular recommended spacing, how close can I plant them to each other? And what else do I need to know? I have a pier and beam house with an 18" tall concrete wall around the perimeter. I also have a 3' wide raised bed along the entire south wall.
Thanks for any help/tips! Here is what I got:
1 mexican lime
4 satsumas: miho, brown select and 2 owaris
1 lemon drop
2 improved meyer lemons
1 orange (i cant remember the name)