Interesting Facts
Although the tallest living tree today is a Coastal Redwood (Sequoia sempervirens) at 378' tall found in Mendocino County, reports claim that the tallest living tree in the historic past was a Eucalyptus. Eucalyptus regnans can grow very tall and one was measured in 1872 to be 435' tall. It was estimated that before it died, it reached over 500'. 
Characteristic trees of Australia have adapted to virtually any climate on the continent, which means there is probably one well-suited for yours!
| Plant Types: | Perennial, Tree |
| Light: | Partial Shade to Full Sun |
| Height: | 15 feet to 25 feet |
| Width: | 15 feet to 25 feet |
| Zones: | 8b to 11b |
| Bloom Color: | White |
| Bloom Seasons: | Early spring, Mid spring, Late spring, Early summer, Mid summer, Late summer |
| Leaf Color: | Green |
| Special Features: | Fragrant foliage, Not North American native |
| Shape: | Oval, Upright or erect |
| Type of Soil Preferred: | Acidic, Clay, Loamy, Neutral, Sandy, Slightly-Alkaline, Well-Drained |
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Plant Care
Planting:
When planting a Eucalyptus tree, you must know how big your tree or shrub will get. Some trees can grow as much as 10' per year and can get rather large. Make sure your Eucalyptus has plenty of room to grow wherever it may be planted.
When planting a Eucalyptus tree, you must know how big your tree or shrub will get. Some trees can grow as much as 10' per year and can get rather large. Make sure your Eucalyptus has plenty of room to grow wherever it may be planted.
Plant Growth:
The genus, Eucalyptus, is a huge genus with roughly 600 species which gives it a variety of different growing needs; however, they primarily need full sun. All species are evergreen, but they may come as small shrubs or huge trees. Many Eucalypts can withstand windy and dry climates, which makes them great candidates for windbreaks. In less hardy areas, grow plants in a cool greenhouse with a minimum temperature of 35F (2C). During the day, set temperatures between 41-50F (5-10C), and at night, keep the temperature at 36F (2C).
The genus, Eucalyptus, is a huge genus with roughly 600 species which gives it a variety of different growing needs; however, they primarily need full sun. All species are evergreen, but they may come as small shrubs or huge trees. Many Eucalypts can withstand windy and dry climates, which makes them great candidates for windbreaks. In less hardy areas, grow plants in a cool greenhouse with a minimum temperature of 35F (2C). During the day, set temperatures between 41-50F (5-10C), and at night, keep the temperature at 36F (2C).
Blooming:
Some species of Eucalyptus have showy flowers that appear at different times of year.
Some species of Eucalyptus have showy flowers that appear at different times of year.
Soil and Irrigation:
Eucalyptus trees and shrubs are known to be drought tolerant. In fact over watering can cause foliar chlorosis for many species. Grows best in neutral to slightly acidic soil that is fertile and remains constantly moist.
Eucalyptus trees and shrubs are known to be drought tolerant. In fact over watering can cause foliar chlorosis for many species. Grows best in neutral to slightly acidic soil that is fertile and remains constantly moist.
Fertilization:
Fertilizer is seldom needed for members of this genus. In some cases some Eucalypts can become deficient in iron, which is why it is helpful to apply chelated iron in the fall and spring, especially for young, developing trees.
Fertilizer is seldom needed for members of this genus. In some cases some Eucalypts can become deficient in iron, which is why it is helpful to apply chelated iron in the fall and spring, especially for young, developing trees.
Pruning:
Some species of Eucalyptus can be coppiced in spring to get juvenile foliage, which you may find more attractive. Alternatly, if you are growing it as a tree, you can remove lower limbs when they start to die back to create a canopy. Remove crossing or wayward shoots, annually, in late winter or early spring, to maintain a healthy framework.
Some species of Eucalyptus can be coppiced in spring to get juvenile foliage, which you may find more attractive. Alternatly, if you are growing it as a tree, you can remove lower limbs when they start to die back to create a canopy. Remove crossing or wayward shoots, annually, in late winter or early spring, to maintain a healthy framework.
Pests:
Since Eucalyptus trees and shrubs are native to only Australia, no pests existed in America until 1984 when the Eucalyptus long-horned beetle was observed in Southern California. Since then several natural predators of the pest have been introduced from Australia.
Since Eucalyptus trees and shrubs are native to only Australia, no pests existed in America until 1984 when the Eucalyptus long-horned beetle was observed in Southern California. Since then several natural predators of the pest have been introduced from Australia.