Alfredo, a lot depends on where you are at. Finding herbs that thrive in your climate will reduce the time you have to spend working on it. It also depends on if you want a formal herb garden or a more natural look. I started my a few years ago, and since I like a more natural, wild look, mine doesn't take a lot of work. There is the obligatory weeding, springtime planting of annual herbs such as basil, and of course harvesting and clipping flowers so they don't go to seed. But overall, mine doesn't require a lot of work. Though this year I do need to work on taming my sage, tarragon and Lemon Balm as these started to take over the entire herb garden last year. One last thing, be very careful of mint. It will take over very easily. If you want to plant it in your herb garden then you must sink a barrier at least 18 inches deep or the mint will send out runners and take over. A better bet for mint is either planting it in a container, in your herb garden or, doing what I did, and planting mint at the back of my deck where I don't mind it taking over.