I tried to go for both 500 pollen prowlers and 100,000 pollen, but only ended up with the former. If there was some consistent score for each pollen you collect, since I there's a multiplier for when you gather large groups of pollen while collecting individual pollen is just one point, it would be easier to know how close I am to that goal.
Getting 5 Spectras on garden seven and up is going to be hard as hell. I almost got them all in garden seven, but ran out of time while waiting for the right moment to make the leap for the last Spectra.