Species

Viburnum odoratissimumSweet Viburnum

4 other cultivars

shrub

Dense Fence Sweet Viburnum

Viburnum odoratissimum 'Dense Fence'

The Story

Plant Bio

Viburnum odoratissimum, commonly known as sweet viburnum, is a robust evergreen shrub native to Asia, characterized by its large, glossy, leathery leaves and fragrant white spring flowers. In its wild form, it develops a broad, open habit and can reach substantial heights, making it a traditional choice for large-scale screening and windbreaks.

'Dense Fence' is a compact, upright selection distinguished by its tight screening habit, shorter internodes, and finer foliage than the parent species. The new growth emerges with a distinct bronze-to-red coloration before maturing to a deep olive green.

Uses & Benefits:

Provides a dense, glossy green backdrop year-round with attractive reddish-bronze new growth and fragrant spring flowers.

Serves as an excellent narrow privacy screen or windbreak, requiring less horizontal space than the standard species.

Flowers attract general insect pollinators, including native bees and butterflies, while the occasional berries provide food for songbirds.

SpeciesViburnum odoratissimumSweet Viburnum

Essentials

At a Glance

Plant Type

Shrub

Height

138"

Width

79"

Light

Full Sun, Partial Sun

Zones

7, 8, 9, 10

Water

Moderate

Humidity

High

Lifespan

Long-lived

Native To

Asia

Toxicity

Mildly toxic if ingested

Bloom period

Spring – Early summer

In flower about 4 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with well-drained soil.
Dig a hole twice as wide as the root ball and of equal depth, ensuring the crown sits level with the surrounding soil.
Backfill with native soil, firm gently to remove air pockets, and water thoroughly to settle the roots.
Apply a three-inch layer of organic mulch around the base, keeping it clear of the main stems to prevent rot.

Pro Tip

Prune the hedge immediately after the spring flowering cycle concludes; shearing later in the year removes the developing buds and prevents the next season's bloom.

Keep It Thriving

Care Guide

Do

Prune immediately after spring flowering to maintain shape and density.
Water deeply during dry spells to maintain even soil moisture.
Apply a balanced, slow-release fertilizer in early spring.

Don't

Do not shear the plant repeatedly throughout the year, as this eliminates the flower buds.
Do not allow the roots to sit in waterlogged or poorly drained soil.
Do not cut back severely into old, leafless bare wood, as recovery is slow and patchy.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Mulch
Pest Check
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Hedges and privacy screensNarrow side passagesBoundary plantingsFoundation screens

Companion Plants

Loropetalum chinense Liriope muscari Gardenia jasminoides

Multiply

Propagation Methods

Good to Know

Common Questions

Dense Fence Sweet Viburnum questions

What zones can Dense Fence Sweet Viburnum grow in?

Dense Fence Sweet Viburnum is hardy in USDA Zones 7–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Dense Fence Sweet Viburnum deer resistant?

Yes — Dense Fence Sweet Viburnum is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Dense Fence Sweet Viburnum bloom?

Dense Fence Sweet Viburnum typically blooms in spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Dense Fence Sweet Viburnum need full sun?

Dense Fence Sweet Viburnum does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Dense Fence Sweet Viburnum drought tolerant?

Yes — once established (usually after the first full season), Dense Fence Sweet Viburnum handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.