Larry Barrett
The orchard has 17 rows and 13 columns, and Joe is located on the baseline, 1/3 of the way (5 feet) between the 6th and 7th tree.
If he looks to his left (toward the 6 trees) and then turns slowly from 0 to 90 degrees, I can find 7 lines where he can see more than one tree in a line; as he turns from 90 to 180 degrees I can find 5 more lines where he can see more than one tree (not counting the row he is standing on).