Two short questions:
1) If my town is not perfect but I buy some Jacob's Ladders from someone else and plant them in my town, will they stay or would they wilt?
2) How much of a tip is customary when selling turnips in someone else's town, just in general?
1) The Jacob's Ladders will stay. Even if you got the Jacob's Ladder naturally with a perfect town and your town becomes unperfect, the Jacob's Ladders will still stay.
2) I usually leave about 10% to 20%, but I guess it just really depends ? xD