|Any suggestions on how to maintain and fertilize these trees would be appreciated.|
|You've made some good choices! Brown Turkey produces medium sized fruit; skin is purplish brown, flesh pinkish amber. It has good flavor and the tree is small, hardy, and vigorous. Celeste develops small to medium fruits; the skin is light violet to violet-brown, flesh reddish amber. It is very sweet, and the tree is small, productive, and hardy. With this said, fig trees are not winter hardy in Michigan so you'll need to bury your trees to protect them over the winter months. Dig a trench about two feet deep and as long as your fig tree is tall (and about 2-3 feet wide). Dig up your fig tree and lay it down horizontally in the trench. cover with soil, then mulch. Dig it out in spring and replant it.
You could also dig the trench to one side of the tree where it's growing, and dig it out on one side, then bend it over, leaving the roots on the far side intact and in the ground. Either way, try to cut as few of the roots as is practical.
Or, you can grow them in a big pot, and move the whole shebang into an unheated, attached garage for the winter. Someplace cool or cold, but not freezing.
As for feeding, you won't need to feed your trees - they're perfectly happy to grow without additional nutrients.
Best wishes with your fig trees!