I was able to win in 70 days on my second try. I think a playable tutorial would've been the best way to help understand the systems.
The art is phenomenal, and the only thing I would change would be to show a highlight of which features I've already selected in each category. Even though my plant looks different, it got hard to keep track of which upgrades I had already taken.
Overall, I really enjoyed this one, and I would definitely play it again if you were to update it with more features. Well done!