Eucalyptus trees are fast-growing and used for a wide array of commercial purposes and as ornamental trees. They are sensitive to chemical fertilizers and as they are already fast-growing, high-nitrogen fertilizers can do more harm than good. Nitrogen will spur abundant but weak foliage and branch growth. Eucalyptus trees can benefit from annual application of organic fertilizers to add nutrients and trace minerals in the soil.
Top-dress the soil around your eucalyptus trees with generous amounts of good-quality compost and well-aged livestock manure so that there is a blanket 2 to 3 inches atop the root mass.
Till the compost and manure into the top 2 to 3 inches of soil to begin the transfer of nutrients.
Water the compost and aged manure into the soil around the outer drip line of the canopy but keeping the water away from the foot or two around the trunk to prevent loosening of the soil and root rot.
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An omni-curious communications professional, Dena Kane has more than 17 years of experience writing and editing content for online publications, corporate communications, business clients, industry journals, as well as film and broadcast media. Kane studied political science at the University of California, San Diego.