A tip for using farm boosts, tested with x5 farm boost.
The boost last 1 hour so select the 100 apples/10min Upgrapes, which will complete in 2min @x5.
30 x 100= 3,000 apples per hour
vs
800 apples if you planted 5hr Diamondates@x5 boost.
With 7 farms=21,000 apples per hour.
(1hour/2min=30 times, actually 29 or 28 since time loss to click on the farms.)