Answer: Persimmon trees are quite adaptable and as long as the soil drains well (doesn't remain soggy), your tree should be happy in the corner of the lawn. I'm afraid planting a navel orange tree within 5' of your persimmon wasn't a good idea, though. Both trees will need lots of elbow room as they mature. I'd move one of them - either one - at least 20' away so that when the canopy of the orange tree matures, both trees will have adequate space. Your persimmon tree probably won't leave out for another 3-4 weeks. It takes time for the roots to become established and for the trees to respond to warm springtime temperatures before they'll wake up from their winters' rest.
Best wishes with your fruit trees!
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