Organic gardening is the way to grow fresh food in a healthy and more sustainable way.. It is a way of working with nature rather than against it. Organic gardening is the practice of growing vegetables, herbs and fruits using only things found in nature. objective is to recycle organic matter back into the soil.

Organic gardening is much more than just growing plants without chemical and a fertilizers and artificial sprays. It is a lifestyle

Soil is full of living organism. Chemical fertilizer can harm those living organism which help in the growth cycle of the plants. Excessive amount can burn the roots.

Common organisms found in 1 gram (1/5th teaspoon) of soil: 

bacteria- 2,000,000 to 500,000,000 
 fungi- 4,000 to 1,000,000 
actinomycetes-1,000,000 to 20,000,000 
protozoa- 1,000 to 500,000 
Every fall,you can collect autumn leaves that make an excellent organic fertilizer & great mulch in our gardens.
For the past few decades we have massacred earthworms and living organism of soil mercilessly. This coincided with beginning of Green Revolution in the world, synthetic fertilizers replaced cumbersome green manure and bulky farm yard manure. Plant insects, pests and diseases were overcome with the use of synthetic chemicals

Mature earthworms weight about one gram each and consume mulch material mixed with earth. Every day, they excrete small porous balls, called vermicast, weighing about one gram. Vermicast is most wonderful thing one can imagine of and is beyond today’s technology to reproduce it synthetically.

Every fall,you can collect autumn leaves that make an excellent organic fertilizer & great mulch for the garden.
The simplest way to improve your soils structure is to add soil amendments, such as compost, manure, chopped leaves, and mulches in and onto the surface of the soil. As it decomposes it will become humus. It will provides all nutrient important for plant growth It helps in drainage and lower the pH of the soil.
I make my own compost and use as a  mulch  around the fruit trees.I add  fifty percent of manure from the animals which i raised in my ranch house (alpaca,mini horse ,chicken and other farm animals.) and mixed them with grass clipping ,leaves,pine needle and kitchen waste.I make a pile of three to four feet tall and keep it moist like a wrung-out sponge ,by adding water every few days The pile need to be turned every week.Its temperature rises above 150 F in few hours I keep it turning for about a month until it cool down to normal temperature and turn to a dark brown earthy material with sweet smell This is Black Gold ,which provide all nutritional need of the plants It is the food for the microbes and earth worm.It improve the structure and drainage of soil.Help in maintaining the PH of the soil.For those plants for extra need there are other organic fertilizer available in the market