Herbs in Our Garden

Eucalyptus (Eucalyptus spp.)

Eucalyptus belongs to the family Myrtaceae, which also includes plants such as myrtle and guava. There are over 700 recognized species, with one common example being Eucalyptus globulus. Eucalyptus, known for its distinct aroma from oils in its fragrant leaves, is a versatile plant used in floral arrangements (fresh/dried), aromatherapy, and traditional medicine for respiratory relief, acting as an antiseptic, and as an insect repellent. Varieties are grown as shrubs or large trees in sunny, well-drained spots, often in warmer zones. It requires significant sunlight and water but can be pruned for bushier growth or overwintered indoors as a houseplant.

In Missouri, outdoors, you can plant eucalyptus in the spring after the last frost, choosing cold/hardy varieties. Most gardeners here grow eucalyptus in large containers so plants can be moved indoors or into a sheltered spot before the first frost. It works best to start seeds indoors 8–10 weeks before the last frost and transplant outside once temperatures stay warm.

Historically, eucalyptus has been used for centuries by indigenous Australians for medicine, tools, and shelter. The leaves contain essential oils with antiseptic properties, now widely used in cough remedies, inhalants, and aromatherapy. The wood is also valued for timber, paper production, and firewood. In essence, think of eucalyptus as a strong herbal remedy that offers aromatic benefits, rather than a culinary spice to season dishes.