Loved it!
Maybe adding some kind of explanation of what each plant does would be very helpful.
There actually is a "Help" menu on the pause screen that explains all of the plants and tools. Admittedly though the descriptions are very brief, and I've actually just noticed one of them is flat out wrong lol. To your point though I've also added the explanations for the four plants to the bottom of the game's description, not everyone is going to dig through menus to understand basic game mechanics.
Thank you for playing!