To grow plants organically means to grow without using man-made chemicals of any kind. Fertilizers, pesticides or herbicides must either contain naturally occurring ingredients or they must be labeled and certified as organic. If you are producing for home use, growing vegetables and fruit by the organic method doesn't necessarily have to be much more expensive.
Choose pest- and disease-resistant fruit and vegetable varieties whenever possible. Plants that are less susceptible to disease and infestation are less likely to require pesticide and herbicide sprays and are well-suited to organic growing.
Use organic compost to fertilize your fruit and vegetable garden. Use a hand- or roto-tiller to incorporate 1 or 2 inches of aged compost into the top 6 inches of your soil at the start of each growing season, before you plant, to give your plants a healthy foundation. The best quality organic compost is the kind you get from your own compost pile, but you can also purchase it online or at your local garden center.
Hand-weed your garden. There are organic herbicides out there, but most are nonselective and thus will kill your garden plants along with the weeds. As you weed with your trowel, make sure to remove the weed's root system as well as its foliage. And remember, the best defense is a good offense. The sooner you dig up weeds, the better.
Ward off insect infestations naturally. Sometimes insect control is as easy as spraying the insects off the plant (as is the case with aphids, a common garden pest). Many common foods like garlic, hot peppers and even anise can be used to repel insects naturally. If those fail, consider releasing predatory insects into your garden (or wait for them to get wind of the infestation and come on their own). As a last resort, look to commercial organic pesticides, but be aware that these persistent pesticides may also kill off the beneficial insects in your garden, which can lead to bigger problems down the line.