This is pretty impressive. I expected lag, and indeed I did get lag once plants started growing, but it was an acceptable amount until I started pressing the fast-forward button. If I did this too much, the framerate was semi-permanently degraded until restart, pruning would be unresponsive, and saving would fail on exit.
Other noticeable issues: white font is sometimes hard to read, shadows are too intense in small recesses, resource management is frustrating, it is too easy to lose expensive items (in part due to bugs), and ladders do not work after restart.
Not as intuitive: It is hard to tell what moisture level the soil is, and it's not clear what amount of light the plants are receiving.
I am not sure how I feel about this game. On one hand, being able to precisely control the growth of plants like you're doing landscaping or clipping a bonsai tree is a wonderful, underused mechanic. On the other hand, I worry about the lag.
Also, I'm not sure if the gameification of resource management is the right fit, as it seems it could take away from the primary mechanic. I do appreciate more generally the building and "having something to do", and I like the aesthetic contrast of natural and urban. Maybe it just needs refinement? Not sure. I suspect that shouldn't be the highest priority, but also, the inventory management will only get worse as more plants are added.