Good game for your first jam! The pixel art is really well made.
The game could have more depth to it, maybe the orders coming in faster and getting harder with more expensive plants, I think that the plants growing a little bit slower would have been good as planting and collecting becomes a bit tedious. Adding some music too would have been good. I don't think you should lose if you accidentally buy something and run out of money instead of not being able to buy it.
It's a good start though it could have more work and time put into it.