What is an 'organic fertilizer'?

What is an 'organic fertilizer'?

Tracy DiSabato-Aust (Garden Designer and Author) gives expert video advice on: What is 'fertilizer'?; What is the difference between fertilizer and soil amendment?; What are the primary nutrients that plants need to grow? and more...

It's derived usually from plant or animal products. Organic is really the type of fertilizers that I select to use in my gardens. The nice thing with the organic fertilizers is that we have nitrogen, phosphorus and potassium provided, but also a lot of micro-nutrients that might not be available in synthetic fertilizers. They're safe to use. They're usually a slow release, so they're safe to use on the plants and they're safe for us as gardeners and for our animals and children in the gardens.