I take my game out of full screen, then do my planting and move the game over to the side of my monitor screen, and pull up another game of some sort that's not in full screen and play the other game(s) while my plants grow on their own, then I pollinate them, play the other game again, I click on the last plant and when it has at least 3 seeds, I know it's time to harvest the seeds. Afterwards, I sell them, while playing the other game. Then start all over again. That way it doesn't seem to take so long for everything to happen.
That is what I do now. I was a year younger, but selling plants may be boring! I more meant Boring when I posted that 1 year ago,
but you need to right click on the icon or your plants wont sell