Winton Viburnum Viburnum × hillieri 'Winton'

Water

The Hillier's Viburnum should be watered deeply once a week during its growing season, making sure the soil is moist but not waterlogged. In the hot summer months, this may need to be increased to twice a week, providing about 1-2 gallons per watering session depending on the size of the plant and the weather conditions. During the winter, reduce watering to every other week or when the soil feels dry to the touch. It's always better to check the moisture level of the soil before watering to prevent overwatering, which can lead to root rot.

Light

Hillier's Viburnum thrives best in full sun to partial shade. Choosing a spot that receives morning sunlight with some afternoon shade can be ideal. However, the plant is adaptable and can also tolerate a position in brighter, indirect light, but it may not flower as abundantly.

Temperature

Hillier's Viburnum prefers moderate temperatures and can generally tolerate conditions between 30°F and 80°F. While it can survive a light frost and brief periods of cold down to about 20°F, sustained exposure to temperatures below this can damage the plant. Ideally, keep it in an environment where temperatures remain between 50°F and 75°F for the best growth.

Pruning

Pruning Hillier's Viburnum is important to maintain its shape, remove dead or crossed branches, and encourage healthy growth. The best time to prune is late winter or early spring before new growth begins. Prune lightly, focusing on shaping the plant and thinning out older stems to encourage air circulation and new growth, typically once per year or as needed to control size.

Cleaning

As needed

Soil

The best soil mix for Hillier's Viburnum is well-draining soil with a mix of loam, peat, and sand; ensure it has a slightly acidic to slightly alkaline pH balance, ideally ranging from 5.6 to 7.5.

Repotting

Hillier's Viburnum is typically planted outdoors and does not require repotting; when grown in containers, repot every 2-3 years to refresh the soil.

Humidity & Misting

Hillier's Viburnum prefers moderate humidity levels but is quite adaptable and can thrive in average outdoor humidity conditions.

Suitable locations

• Indoor

  Place Hillier's Viburnum in a bright spot, avoid dry air and drafts.

• Outdoor

  Plant in well-draining soil, partial to full sun, mulch root zone.

• Hardiness zone

  4-8 USDA

Life cycle

Viburnum × hillieri 'Winton', commonly referred to as Winton Viburnum, starts its life as a seed that, when conditions are favorable, germinates and grows into a seedling. The seedling stage is characterized by the formation of a primary root and shoot, which then develops into a young bush as it matures and produces leaves. As the viburnum matures, it enters the vegetative stage, where it invests energy into growing larger and creating a sturdy structure of stems and foliage. Following this, Winton Viburnum enters the reproductive stage, developing clusters of small, often fragrant flowers that are typically white or pink, attracting pollinators to facilitate cross-pollination. After successful pollination, the plant produces fruit, which are small drupes that can be dispersed by animals or gravity, thus beginning a new cycle with seed dispersal. Over several years of growth, the plant reaches maturity and will continue to cycle through vegetative and reproductive stages annually until it eventually declines and dies, completing its life cycle.

Propogation

• Propogation time

  Early Spring

• The most popular method of propagation for Viburnum x hillieri 'Winton', commonly known as Winton Viburnum, is by softwood cuttings. This process typically takes place in late spring or early summer when the plant's new growth is just beginning to harden but is still flexible. Cuttings about 4 to 6 inches long are taken from healthy, current year's growth and the lower leaves are removed. The cut end of the cutting is dipped in rooting hormone to encourage root development and then planted in a well-draining soil mix. Keeping the soil consistently moist and providing a high humidity environment by covering the cuttings with a plastic bag can greatly improve the chances of successful rooting. The cuttings are usually ready to be potted up or planted out the following spring after roots have formed and new growth is evident.