Second thougt about the budding time: Why not make the time a plant to bud compare to it's health? Irl a healthy plant doesn't only grow stronger than those who aren't, but they also take less time to grow.

And I would like to see that you can sell seeds easier. I store 2 seeds of each plant. When I have my greenhouse all filled with 1 specie with 3-5 seeds on it, I have to move my mouse approx. 60 times from plant to trash. It would be a lot easier to move 1 seed a time while using the left mouse button, and all the seeds of that plant with the right mouse button. Or make a button to press to sell all the seeds of the selected plant at once.