Super cool submission! I'm impressed that you managed to add things that are often omitted in gamejams, like a progression system and even a story. I kind of wish there were more upgrades since I got to 9999 pollen pretty quickly (also cause of the bug) but that might be a bit much to ask considering the time frame! Overall works quite well, I love the moment where you charge up your water in the dark and then the music kicks in, that's a great way to get you hyped. One problem I had is that my finger got pretty tired from holding the button so long. Maybe it's cause I'm an old man, but I would love to have an option to just toggle the spraying on and off instead of having to hold the left mouse button all the time. Had a lot of fun with the game despite that though, very polished and frantic.
By the way, I had a bug where after buying the last upgrade (I bought Storage last) it stuck on my screen for the whole game. Made it extra challenging for sure, haha!