Viburnum odoratissimum, often known as Sweet Viburnum, is an evergreen shrub or small tree that is native to Asia. It is cherished for its glossy, leathery foliage and beautifully scented, white flowers.
Sweet Viburnum typically reaches a height of about 10 to 20 feet (3 to 6 m) with a spread of about 5 to 10 feet (1.5 to 3 m). Its dense, green leaves provide an elegant backdrop for its clusters of small, white, fragrant flowers that appear in spring.
Viburnum odoratissimum is valued for its year-round interest, strong growth, and its use for hedges or screening. Plants do well in USDA Zones 8 to 10 and are rated as H4 hardy by the RHS.
This slow-growing evergreen shrub can make an excellent choice for borders, as a standalone specimen, and for creating barriers.
Some great companion plants to grow alongside Sweet Viburnum include contrasting plants such as Hosta, Lavender, and Autumn Fern, and complimentary looking plants like French Hydrangea, Panicle Hydrangea, Rose bushes, and Camellia japonica.
How to Grow and Care for Sweet Viburnum
Sweet Viburnum plants prefer to grow in a location with full sun to partial shade; afternoon shade can be beneficial in warmer climates.
They are adaptable to a wide range of soils, from sand to clay, and are tolerant of both acidic and alkaline pH levels. The soil must be well-drained. For the best results try using a loamy soil of pH 5.6 to 7.5.
The best time to plant is during the cooler months of spring or autumn. This will give plenty of time for the root system to become established before the onset of summer or winter.
Usually planted from root balls, the hole you dig should be the same depth as the root ball, and about two to three times as wide. Keeping the top of the root ball just above the soil's surface will help to prevent the collection of water at the base, which may lead to potential root rot issues.
Once planted, water thoroughly every three days for the first few weeks, then gradually reduce as the plant becomes established. Keep the soil moist (but do not allow to get soggy) during the first year of its growth.
Feed with a general-purpose slow-release fertilizer in spring to support healthy growth. If plants are struggling, then you may wish to give them a further feed in the summer.
If you are growing as individual specimen plants, then use a spacing of about 4 to 6 feet (120 to 180 cm) apart. For dense hedging, space at about 2 to 3 feet (60 to 90 cm).
Once established, Sweet Viburnum requires moderate watering, with deeper watering in dry periods. Applying a two to three inch (5 to 8 cm) layer of mulch around the plant's base can help to keep the soil moist, and help to protect the plant from harsh winters.
Plants don't require regular pruning but give them a trim to help maintain size and shape. Prune once flowering is completed. Don't leave pruning too late, as you could end up cutting off buds developing for next season.
While generally robust, Sweet Viburnum can sometimes be affected by aphids or fungal diseases.
Propagation of Viburnum odoratissimum is usually achieved by taking semi-hardwood cuttings (as these tend to root better than other cutting types). Take a cutting of about 4 to 6 inches (10 to 15 cm) from a non-flowering shoot in the summer. Remove the lower leaves, dip the cut end in rooting hormone, and plant it in a pot containing a well-draining medium (equal parts perlite and peat moss). Keep the medium moist until the cutting has rooted. This usually takes a few weeks.
Other great hedging plants covered on this site include Buxus microphylla, Eastern Arborvitae, Taxus plants, Leyland Cypress, Japanese Barberry, Japanese Euonymus, and Wintercreeper.
Tips for New Gardeners
Sweet Viburnum is versatile and hardy, making it an excellent choice for beginners. While it is relatively low-maintenance, ensuring proper watering and occasional pruning will keep it looking its best. Beware of aphids, which may be attracted to new growth.
Quick Viburnum odoratissimum Growing and Care Facts
Scientific Name: Viburnum odoratissimum.
Common Names: Sweet viburnum, Fragrant viburnum.
Growing Zone (USA / UK Hardiness): USDA Zones: 8-10. RHS Hardiness Rating: H4 (Hardy – Average winter).
Best Used For / Garden Location: Ideal for hedges, privacy screens, or as a specimen plant. Prefers full sun to partial shade locations.
Plant Details
Life Cycle / Plant Type: Evergreen shrub.
Plant Height: 10-20 feet (3-6 meters).
Plant Spread: 5-6 feet (1.5-1.8 meters).
Blooms: Spring.
Flower Details: Small, white, fragrant flowers in large clusters.
Leaf Foliage: Large, leathery, dark green leaves.
Fruit: Red berries that turn black when ripe.
Growing Conditions and Location
Best Light Conditions: Full sun to partial shade.
Suitable Soil Types: Prefers well-drained, slightly acidic soil. Tolerates a wide range of soil types.
Sowing/planting: Plant container-grown plants in the spring.
Germination time: Not typically grown from seed.
Propagation: Propagate by semi-hardwood cuttings in summer.
Plant Care: Water regularly during dry periods. Prune to maintain desired shape.
Growing in pots and containers: Suitable for large containers with adequate drainage.
Growing as a House plant: Not typically grown as a houseplant.
Further Information
Miscellaneous: Attracts birds. Tolerant of urban pollution.
Pests and diseases: Generally disease free. It can occasionally be affected by pests such as aphids, Scale Insects, and Viburnum Beetle.
Common Cultivars / Varieties: 'Awabuki' has glossy, larger leaves. 'Emerald Lustre' has large, shiny leaves.
Family: Adoxaceae, the Moschatel family.
Native: Native to East Asia.
References and Further Reading: Viburnum guide from the Clemson's Home & Garden Information Center; Viburnum odoratissimum var. awabuki use in landscaping by OSU.
Common Questions
Does Viburnum odoratissimum make a good garden or landscaping plant?
Viburnum odoratissimum is an excellent garden or landscaping plant. Its dense foliage and small, fragrant flowers make it a great choice for hedges or screens.
Is Sweet Viburnum a fragrant plant?
Yes, Sweet viburnum is a fragrant plant. Its small, white flowers emit a sweet fragrance, which is particularly noticeable in the evening.
Is Viburnum odoratissimum invasive in the USA, and if so in which states?
Viburnum odoratissimum is considered invasive in Florida, where it has escaped cultivation and colonized natural areas. In other states, it's generally not considered invasive. Be sure to check your local regulations before growing this plant in your garden,
How do I remove Viburnum odoratissimum from my garden?
To remove Viburnum odoratissimum, cut the plant back and completely dig out the root system. Larger plants may require professional removal. Dispose of all plant material responsibly.
Summary
Viburnum odoratissimum is an evergreen plant that is native to Asia. It enjoys full sun to partial shade and moist, well-drained soil. This evergreen shrub, known for its glossy leaves and fragrant white flowers, is often used for hedges and screens.
I hope that you have enjoyed reading this guide on how to grow Sweet viburnum. You may also enjoy the following growing guides: How to grow Sandankwa Viburnum, Laurustinus, and Viburnum davidii plants in the garden.
