Continuity mistake: When Barry lands on the windshield chasing the "Honey farms" truck and is climbing up in horror, the grasshopper that is dead is not where he's supposed to be; it's a little beetle. Then when the wipers turn on, the grasshopper is way down close to the wiper.
Other mistake: After all the plants have stopped being pollenated when the pollen jocks are getting ready for liftoff you see the branches outside the window have green leaves.
Continuity mistake: When Barry is talking to Vanessa, Barry is standing in front of some keys. In the next scene, the keys are gone.
Continuity mistake: When the bees are testing the hurricane survival, the bee opens the parachute and lands on the ground. When Barry and Adam are walking past, you can see in the background that the parachute is gone.
Continuity mistake: When Barry gets to Honey Farms, he flies into a room with two bees. The bee on the left (the one crouching down) changes a few times from an old bee to a younger one, then back to old.
Continuity mistake: When the trial judge is entering, you can see on the right a table where the company owners are standing. There are four people standing, one of which is Mr. Montgomery. In the next shot, there are four company owners standing there, not including Mr. Montgomery.
Continuity mistake: When Barry is talking to Vanessa, Barry is standing in front of a chocolate bar. In different shots you can see him standing on the right side of the chocolate bar.
Other mistake: Though it was likely an intentional simplification of pollination and the value of bees, rose pollen (from the Rose Parade float) may be able to pollenate other rose species, but not all plants and trees.