The best fertilizer for trees in the spring is an organic fertilizer that slowly releases its nutrients during the growing season. Organic fertilizers are typically made of such plant and animal matter as manure, chicken litter or bone, and cottonseed meal. They improve the root system of trees.
About this Author
Thomas K. Arnold is the publisher and editorial director of Home Media Magazine and a regular contributor on entertainment to "USA Today", "The Hollywood Reporter," "San Diego Magazine" and other publications.
An alumnus of San Diego State University, Arnold has appeared on such TV shows as "CNN", "E! Entertainment" and "G4's Attack of the Show" to discuss home entertainment and technology issues.