Autumn is a good time to add organic matter to the soil and garden beds.
Complete fertilsers
Can be purchased in bags or one can make create compost from kitchen scraps, dry leaves, coffee grounds and garden clippings.
Liquid Fertiliser
Worm farms provide worm juice.
Seasol is a great organic liquid fertiliser.
Compost can be mixed / dug into the soil. Composts improves the soil and adds valuable nutrients to aid plant grow.
Homemade compost is best as it contains recycled goodness.
Chicken manure
This can be purchased in pellet form and is best applied during rain. Spread around the drip line of trees and shrubs.
Cow manure
This can be purchased in bags and is added to the soil. Its great as it improves the soil. Raw cow manure is best mixed into compost and allowed to brew for a few weeks.
Horse manure
Cold dry manure. Can be applied straight onto a garden and mixed in. Or horse manure can be added to open compost bays or bins and allowed to mix and brew.
Acid loving plants
These include, Blueberries, Azaleas and Camellias. These plants require specific acid loving fertiliser and or compost.
In general the best times to add fertiliser are in Autumn and Spring.