Nice concept, but I found I was frustrated by the game more than enjoying it. This is mainly due to the delay in response of clicking and the plants asking for things they have just been provided with. It doesn't make sense for a plant to need water right after it has been watered.
Also, the time before a plant degrades due to lack of something should be increased. Imho, the difficulty is too steep right now, I wouldn't mind losing when trying to juggle 4-5 plants, but as of now, I find it hard to manage even 2.