It’s a mindset, not a method. Organic Gardeners create ecosystems of symbiotic relationships and nurture those through natural means, beginning with the soil. Fertilizing and pest control are handled without chemicals.
However, not everyone is strict about using organic everything. Most people are more concerned with using organic garden methods with their fruits and vegetables, opting for non-organic methods with ornamentals such as flowers and trees. If you really want your edibles to be organic, though, be careful about how close you use non-organic fertilizers and pesticides.
Most commonly, home gardeners mix and match methods. Seeds and seedlings are more readily available in non-organic form. Compost is available free through some city sanitation departments, which may or may not contain inorganic pesticides or fertilizer.
Strict organic gardeners swear by their methods. Inorganic fertilizers add nutrients but it changes the balance in the soil: beneficial insects die or move away from the area. Over time the soil’s natural nutrients diminish, requiring more fertilizer.
And without the beneficial insects, pests can take over.
The good news is, even with soil that has been worked for a long time using non-organic methods, you can always switch it up. One bit at a time, moving away from non-organic towards organic methods makes a difference.