Gardening is not trivial. If you believe that it is closely examine why you feel that way. You may discover that this attitude has been forced upon you by mass media and the crass culture it creates and maintains. The fact is gardening is just the opposite - it is or should be a central basic expression of human life.
I know a lot of celebrities who are perfectly happy to put their name to something and then leave it at that because the money is good but I need to have complete control over how something is going to look if my name is going to be attached to it.