Neat little game! I saw the thumbnail for this game for a while back and my friend sent me the video you made about it and I gotta say, for doing this in five days that's a lot. I can't believe you made this in five days, my first video game I made ever (also made in godot) took me 2 months just to make a character, animation, and parkour. But you somehow did this in 5 days! Maybe it's because you have experience with C# so you know the basics of code? But you made a very good game for your first game in Godot, it's amazing and satisfying.
Btw: Everyone who's reading this, here's my strat...
1. Buy the Snake plant a couple times and keep selling it till you get around $50.
2. Buy as many Cactus' as you can (without running out of money, save around $20) and then sell them all and rinse and repeat.
3. Now that you're rich, buy as much plants as you can until you get THE FROG POT it's the best one.
4. Now just play the game however you want, buy any plant you want...and sell a few now and then, just to keep yourself rich.
That is my stratigy ;)...