The latter method will take longer. And because it is open and you cannot regulate it, certain elements can be accommodated into the pile which may be harmful to your garden. So when you are already using that, you still have to check very closely so that you will retain your garden's health and beauty.
You have to remember that you must be picky with your plants. Ask a local dealer what plants will grow easily on your location. You must not opt for something you like that will not survive the site's conditions.
Learn the art of mulching. You have to do this periodically in your garden beds. This will kill the growing weeds. You'll be able to monitor the unnecessary pests and get rid of them. This also moderates the temperature of the soil. And by mulching it, you'll prevent the soil from eroding.
Have a variety of plants in your garden. This way, you will be able to attract beneficial insects. These are the types that would feed on the pests that your garden may incur.
And the most important thing to do in organic gardening is to befriend your plants. You must know all them fully well. This way, you will have an idea as to what to do in cases where a problem struck and you have no one to help you.