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PlantSnap
Plant Care
Red box
(Eucalyptus polyanthemos)
Also Known As
Red box, Silver dollar gum, Argyle apple
About This Plant
Eucalyptus polyanthemos is a species of eucalyptus tree that is native to southeastern Australia. It is known for its distinctive blue-grey leaves and its ability to grow quickly in a variety of soil types. The tree can grow up to 30 meters tall and has a broad, spreading canopy.
Plant Care Instructions
Outdoor Size Range
Height: 50-100 feet (15-30 meters); Spread: 30-50 feet (9-15 meters).
Light Requirements
Eucalyptus polyanthemos prefers full sun, but can tolerate some shade. It requires at least 6 hours of direct sunlight per day.
Humidity Needs
Eucalyptus polyanthemos prefers low to moderate humidity levels.
Fertilizing Schedule
The tree does not require regular fertilization, but can benefit from a balanced fertilizer in the spring.
Pruning Guidelines
Pruning is not necessary for Eucalyptus polyanthemos, but can be done to shape the tree or remove dead or damaged branches.
Common Pests and Diseases
Common pests and diseases for Eucalyptus polyanthemos include psyllids, borers, and scale insects. The tree is also susceptible to fungal diseases such as root rot and canker.
Indoor Size Range
Not suitable for indoor cultivation.
Watering Schedule
The tree requires moderate watering, especially during the first few years of growth. It can tolerate some drought, but should be watered deeply during prolonged dry spells.
Temperature Range
The tree can tolerate a wide range of temperatures, from 14°F (-10°C) to 104°F (40°C). It is hardy to USDA zones 8-11.
Growing Season
The tree can be planted year-round in areas with mild winters. In colder regions, it is best to plant in the spring or fall.
Growing Difficulty Level
Eucalyptus polyanthemos is considered easy to grow, but can be challenging for novice gardeners due to its size and rapid growth rate.
USDA Hardiness Zones
USDA hardiness zones 8-11
Did You Know?
Eucalyptus polyanthemos is commonly used for its essential oils, which have a variety of medicinal and industrial uses. The tree is also a popular choice for landscaping and erosion control due to its fast growth and hardiness.
