The best fertilizer for holly trees is an acid-based variety that includes nitric acid or cottonseed oil to keep the pH level down. Fertilize the holly tree in the late fall to give it a nutritious boost before the growing season; add a layer of compost to further fertilize the plant and enrich the soil with organic matter.
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.