Great game play, love the gene manipulation.
A couple thing to improve, I took a quest that had 4 things to make sure the plant had, and the text overlapped the flowers I had planted and made it difficult to read. This overlap issue also appears with the shipping box and the far right pot near the watering can, trying to place a previously grown flower in that pot will trigger the box and not allow you to replant it. Moving the shipping box down would solve the issue.
Also I may have found a glitch with the two pots on the bottom, I grew something in the second pot on the bottom and the next day it was showing red, so I attempted to replant it but it wouldn't let me. I tried moving a different plant to that pot but the same issue of not letting me plant a plant in those two pots.
I also think some way of keeping track of your findings would be good.