If you are just getting started with organic gardening perhaps you should look over these tips to help you get started.
Some of my favorites include:
Mulch your flower beds and trees with 3″ of organic material – it conserves water, adds humus and nutrients, and discourages weeds. It gives your beds a nice, finished appearance. (mulching is sooo important)
Think “biodiversity”. Using many different kinds of plants encourage many different kinds of beneficial insects to take up residence in your yard.
To deter deer from grazing in your landscape, try placing strongly scented bar soap, or human hair, around your plants. The hair can be “recycled” from a salon or barber shop. (this doesn’t work for Iowa deer, but maybe others)