Pretty fun game, it gets VERY hectic very quickly. Not sure if there are more enemies than gnomes, I couldn't keep up with the defense fast enough to not get overwhelmed, unsure if there are more tools / enemies.
In general, you can only really support like 5-6 plants around the well, and then you can place some additional plants for bait. If I could water more than one plant at a time, or I didn't have to water fully grown plants, this would be more strategic. As it is, you will eventually not be able to keep up.
I'd suggest some changes to the watering mechanics to make it feel more rewarding to plant away from the well. (since each plant really needs to kill at least like 3 dudes to even out)
The music is VERY loud.