Thanks, I am glad that you liked my concept :)
I understand what you mean and it was actually and idea of mine in the beginning to make the crops look different and sort of "evolve" as they grow. But my experiences in game making are very limited and the project is actually a school project that we have iterated over a couple of weeks. So we had to publish a "playable" game slice every week which made it so that I had to focus to get the esence of growing crops in a fast and simple way. Hence why my crops just grow in size over time :P
But it's an interesting idea that I think would be fun to look more into!