Winterberry
Ilex verticillata · Aquifoliaceae
📷 Photo (c)2007 Derek Ramsey (Ram-Man) · CC BY-SA 2.5
The gardener's calendar
Ideal time to plant winterberry: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Flowering
- Spring (May-June), discreet white flowers
- Fruiting
- Autumn-winter, bright red berries
- Adult size
- 2 to 4 m tall, upright and compact habit
- Growth
- Moderate
- Hardiness
- Very hardy, down to -20 °C
- Origin
- North America (wet areas)
- Soil
- Moist to fresh, slightly acidic, well-drained
Care
Watering
The winterberry holly appreciates consistently fresh soil. Water regularly during the growing season (spring-summer) and during prolonged dry spells. In winter, reduce watering but maintain some soil moisture, especially in the first years after planting.
Light exposure
Place this plant in full sun or partial shade for optimal fruiting. A sunny exposure promotes abundant production of decorative red berries. It tolerates partial shade but fruits less generously.
Pruning
Prune lightly after flowering or in late winter to maintain shape and density. The winterberry holly handles cutting well and can be thickened by moderate pruning. Avoid severe cuts that would reduce fruiting the following year.
Fertilizing
An annual application of well-decomposed compost in spring is generally sufficient. In poor soil, you can add a balanced fertilizer at the start of the growing season. Favor organic amendments over chemical fertilizers.
Soil and drainage
The winterberry holly prefers slightly acidic soil, rich in organic matter and well-drained. Install it in a naturally moist area or improve the soil with potting soil and compost. Soil that is too dry or chalky may slow its growth.
Diseases and pests
This is generally a robust plant. Watch for spider mites or scale insects in overly dry conditions. Good air circulation and appropriately moist soil prevent most problems. No major diseases threaten it in suitable conditions.
Did you know?
The winterberry holly is a dioecious species: only female plants produce the spectacular red berries so prized for winter decoration. In North American nature, these berries are a vital food resource for many migratory birds in autumn and winter. This ecological adaptation makes it an excellent choice for gardens welcoming wildlife.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
Add this plant to my garden →Plants from the same family
- HollyIlex aquifolium
- Yaupon hollyIlex vomitoria
- Japanese hollyIlex crenata
- Yerba mateIlex paraguariensis
- Highclere hollyIlex altaclerensis
- Ilex meserveaeIlex meserveae
Tips generated and checked by Viridia — adapt them to your local climate.