What are the examples of organic fertilizer?

What happens to erosion when people plant vegetation? Why are my watermelons not growing as expected? What are Palm leaves? Is a cactus a flowering or a non flowering plant? How often should I water a nerve plant to ensure its optimal growth and health? How can I effectively manage millipedes in my garden to prevent damage to my plants? What is the French 'tondeuse à gazon' in English? What is special about zebras? What is the homophone for flower? How can I effectively control aphids on linden trees to prevent damage to the foliage and promote the tree's health? What does Mary find when she is exploring the corridors of misselthwaite in the secret garden? Components of horticulture? How can you tell which is Red Sassafras or white sassafras? Why are my avocado leaf tips turning brown? Who planted the white roses is the garden? How do you know that plants do not get all they need from soil? How can I get my kalanchoe to bloom? How can I grow nectarines from seed successfully? What describes the introduction of high yielding crops varieties? What causes the plants grown in the sterilized soil to grow so much?