Eucalyptus cinerea, also known as the Silver Dollar Gum or Silver Dollar Eucalyptus, is a fast-growing, evergreen tree.
It has distinctive round, silver-blue leaves that bring a eucalyptus (menthol) scent when crushed. Plants reache a height of around 30 to 60 feet (9 to 18 m), with a spread of 10 to 15 feet (3 to 4.5 m).
This species is popular for its aromatic foliage, is often used in floral arrangements, and is suitable for large gardens and parks.
It is hardy in USDA zones 8 to 11, and is not considered invasive in the USA.
How to Grow Eucalyptus cinerea in the Garden
Eucalyptus cinerea prefers a sunny position with well-drained soil. It adapts well to a wide range of soil types, including loamy, sandy, or clayey soils, and can tolerate slightly acidic to mildly alkaline pH levels.
Plant Silver Dollar Eucalyptus in spring or early summer. Simply dig a hole as deep as the root ball, with about twice the width. Next, plant into the hole, backfill the soil, and then thoroughly water it.
Once established, the tree will be drought-tolerant. However, it will benefit from regular watering, during very dry periods. Use a general-purpose fertilizer in the spring, as this should encourage healthy growth.
Pruning can be done in late winter or early spring. This is mainly to help maintain a desired shape and size. Young trees should be pruned to promote a single, sturdy leader.
Monitor for pests like Eucalyptus gall wasp, Eucalyptus long horned borers, and diseases such as Eucalyptus rust.
Using Eucalyptus cinerea in your garden will introduce a touch of silvery-blue color, distinctive fragrance, and a stately presence. It is ideal for adding interest to large landscapes, and can also act as a natural windbreak or privacy screen.
How to Grow Eucalyptus cinerea as a Houseplant
To grow Eucalyptus cinerea as a houseplant, provide it with full sunlight or bright indirect light. Maintain a room temperature of 65-75°F (18-24°C).
Plant it in well-draining soil and water regularly to keep the soil consistently moist but do not allow to get waterlogged. Fertilize every two weeks during the growing season (use abalanced liquid fertilizer). Pruning should be done in early spring to maintain a compact shape, and to encourage bushier growth.
Quick Eucalyptus cinerea Growing and Care Guide
Scientific Name: Eucalyptus cinerea.
Common Name(s): Silver Dollar Eucalyptus, Argyle Apple, Silver Dollar Gum, Silver Dollar tree.
Growing Zone (USA / UK Hardiness): USDA Zones: 8-11.
Best Used For / Garden Location: Windbreaks, ornamental plantings, and cut foliage in floral arrangements.
Plant Details
Life Cycle / Plant Type: Evergreen.
Plant Height: 25-60 ft (7.5-18 m).
Plant Spread: 10-15 ft (3-4.5 m).
Blooms: Summer.
Flower Details: Creamy white flowers, often hidden by foliage.
Leaf Foliage: Round, silver-grey leaves.
Fruit: Woody capsule.
Growing Conditions and Location
Best Light Conditions: Full sun.
Suitable Soil Types: Prefers well-drained soils; can tolerate clay, loam, and sand.
Sowing / planting: Sow seeds in spring in a sheltered spot.
Germination time: 14-21 days at 65-75°F (18-24°C).
Propagation: From seed or by coppicing.
Plant Care: Water regularly but let soil dry out between waterings.
Growing in pots and containers: Suitable for large pots, though size may be restricted.
Growing as a House plant: Can be grown as an indoor plant if given sufficient light.
Further Information
Miscellaneous: Tolerant of deer. May be used for koala habitat restoration in native regions. Can be invasive in some regions. Highly toxic.
Pests and diseases: Susceptible to eucalyptus gall wasp, silver leaf and gum suckers.
Common Cultivars / Varieties: No known cultivars.
Family: Myrtaceae, the Myrtle family.
Native: Native to Australia.
References and Further Reading: Missouri Botanical Garden Plant Finder; NCSU Plant Toolbox; Wikipedia.
Common Questions
Does Eucalyptus cinerea make a good garden or landscaping plant?
Yes, Eucalyptus cinerea can make a dramatic statement in gardens and landscapes. It is valued for its striking silver foliage and fast-growing nature, be aware that it can become quite large, so adequate space is needed.
Is Eucalyptus cinerea a fragrant plant?
Eucalyptus cinerea is a very fragrant plant. When crushed, the leaves release a strong, fresh, menthol-like scent. This feature makes Silver Dollar Eucalyptus a favorite for aromatic gardens and for use in floral arrangements.
What is the perfect location to grow Silver Dollar Eucalyptus?
Silver Dollar Eucalyptus does best in full sun and well-drained soil. It's drought-tolerant once established, and is best suited to USDA Hardiness Zones 8-11.
Is Eucalyptus cinerea invasive in the USA, if so in which states?
Eucalyptus cinerea is not listed as invasive in the USA. However, Eucalyptus species can become invasive in certain conditions, so be sure to check your local regulations.
How do I remove Eucalyptus cinerea from my garden?
Removing Eucalyptus cinerea requires cutting down the tree and grinding the stump. Due to the tree's size and its potential for regrowth from roots, you'll probably best to hire a professional service for this task.
Summary
Eucalyptus cinerea is a fast-growing evergreen tree, commonly used in large gardens for its fragrant, silvery foliage. It requires sun and a well-drained soil, it tolerates drought, and is perfect for creating a focal point in the landscape.
I hope that you have enjoyed reading this guide on how to grow Eucalyptus cinerea. You may also enjoy the following growing guides: How to grow Crape Myrtle, Vinca minor, and Lagerstroemia plants in the garden.
