Judd viburnum

Sun

Full sun to partial shade; flowering is best with several hours of direct sun.

Water

Keep the soil evenly moist while establishing. Established shrubs tolerate brief dry spells, but water deeply during prolonged drought.

Soil

Moist, well-drained soil enriched with organic matter; tolerates clay, loam and sandy soil, and a range of pH levels. Avoid waterlogged ground.

Height

6-8 ft (1.8-2.4 m)

Spread

6-8 ft (1.8-2.4 m)

Flowers

Mid- to late spring; rounded clusters of pink buds open into creamy-white, strongly fragrant flowers.

Foliage

Opposite, broadly oval, dark green leaves with toothed edges; autumn colour varies from muted yellow to red or purple.

Growth

Slow to moderate.

Care needed

Low

• Pollinators
• Cold hardy
• Wildlife
• Low allergen
• Fragrant

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Easy

Toughness

Fairly tough

Pick your zone, country, light and whether you have pets.

1. Planting day

   1.6 ft (0.5 m)

2. After 1 year

   2.4 ft (0.75 m)

3. After 2 years

   3 ft (0.99 m)

4. After 3 years

   4 ft (1.2 m)

5. After 5 years

   6 ft (1.7 m)

About 7 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Safe

Growth rate

Slow

• Water deeply during the first two growing seasons whenever the root zone begins to dry.
• Apply 2-3 in (5-8 cm) of organic mulch, keeping it clear of the stems.
• Top-dress with compost in spring; use a balanced slow-release fertiliser only if growth is weak and soil fertility is low.
• Water established shrubs during extended dry spells, especially while flower buds are developing in summer.
• Allow enough space for its mature width rather than keeping it small by repeated clipping.

Pruning. Prune immediately after flowering, removing dead or crossing branches and shortening only shoots that need correction. To renovate an older shrub, remove a few of the oldest stems at ground level each year rather than shearing the whole plant.

Early spring

Top-dress with compost and renew mulch, leaving a clear gap around the stems.

Spring

Check emerging leaves for aphids and viburnum leaf beetle larvae.

Late spring

After flowering, remove damaged or crowded branches and make any necessary size corrections.

Summer

Water deeply during prolonged dry weather; avoid frequent light sprinkling.

Autumn

Plant new shrubs while the soil is workable and moist, or wait until spring in very cold regions.

Winter

Remove broken branches, but leave healthy shoot tips intact because they carry next spring's flower buds.

• Plant beside a path, entrance or seating area where the spring fragrance can be appreciated.
• Use as an informal flowering hedge or loose screen without regular shearing.
• Place toward the back of a mixed border, with lower perennials covering the ground in front.
• Combine with spring bulbs and shade-tolerant perennials along a bright woodland edge.

Garden styles it suits: English country, Traditional, Woodland, Sensory garden, Cottage garden and Low-maintenance.

Plant it with: Daffodils, Hellebores, Epimediums, Hostas, Japanese painted ferns and Hardy geraniums.

Wildlife: Flowers attract bees and other pollinating insects, and the branches provide shelter for small birds. Fruit production is often sparse; any berries that develop may be eaten by birds.

• Aphids can curl young leaves: dislodge small colonies with water and encourage ladybirds and other predators.
• Viburnum leaf beetle can skeletonise foliage where established, particularly in parts of North America and Europe: inspect leaves in spring, remove larvae early and prune out egg-scarred twigs during dormancy.
• Powdery mildew may appear in crowded or dry, stressed plants: improve airflow, water the root zone during drought and avoid overhead watering.
• Poor flowering often follows winter pruning or excessive shade: prune only after bloom and provide a brighter position if necessary.

Not known to be toxic to cats, dogs or horses, and no serious toxicity to people is established. The berries are not a food crop; eating substantial quantities may cause stomach upset, so discourage children and pets from eating them.

• Koreanspice viburnum (Viburnum carlesii)

  One of Judd viburnum's parents, with very similar fragrant flower clusters. It generally has more noticeably hairy leaves and shoots, but reliable separation can be difficult without a nursery label.

• Burkwood viburnum (Viburnum × burkwoodii)

  Also has fragrant white flowers opening from pink buds, but its leaves are usually glossier and often persist through winter in mild climates; Judd viburnum is deciduous.

• Fragrant snowball (Viburnum × carlcephalum)

  Usually develops into a larger shrub with much larger, showier rounded flower heads than Judd viburnum.

The hybrid name honours William H. Judd of the Arnold Arboretum, who raised the cross between Viburnum carlesii and Viburnum bitchiuense.

Propagation. Take softwood cuttings in late spring or early summer, or semi-ripe cuttings later in summer, and root them in a free-draining medium under humid conditions. Layering low branches is another option; seed does not reliably reproduce this hybrid.

Accepted botanical name

Viburnum juddii

Sources: GBIF (CC BY 4.0). The care and design notes are LandscapeGPT's own.