Characteristics

• The eucalyptus genus is diverse, with wide variation between species. Trees often have highly aromatic foliage that is bluish or grayish green. Leaves may be lance-shaped, or circular. Mature eucalyptus plants produce petal-less flowers characterized by showy stamens that may be cream colored, white or even shades or pink or red. Bark may be stringy and peeling, or furrowed into square blocks. All parts of eucalyptus are poisonous if ingested, although its menthol-scented oil extracts are frequently used topically for medicinal purposes.
  
  

Location

• Exact hardiness depends on species. As a general rule, eucalyptus trees prefer full-sun environments. No species will grow in complete shade, though some may tolerant a little shade. Eucalyptus crenulata and Eucalyptus neglecta are two of the most shade-tolerant varieties. Taller tree varieties, such as those found naturally in forests, are less tolerant of exposed, windy areas. Varieties with thicker leaves, such as the snow gum eucalyptus tree, are more tolerant of the salty air found in coastal regions.
  
  

Care After Planting

• Most eucalyptus trees are highly drought tolerant once established. New plants however require regular watering. The plant should be watered as often as necessary to keep the soil moist to the touch, even if that means watering daily, until the plant has grown to be several feet tall. Mulch the soil with 3 to 6 inches of organic mulch in order to retain moisture, suppress weeds and add nutrients to the soil.
  
  

Long-term Care

• Eucalyptus trees require very little care once established. Trees have a tendency to drop leaves and bark, which may need to be cleaned up in order to give the garden a neat, tidy appearance. Dropped leaves can provide a natural mulch for the tree however, and can often be left on the ground. Established plants should not be transplanted to a new location, as eucalyptus trees have sensitive, delicate roots that can be easily damaged.