Ilex verticillata 'Oosterwijk' (f)

RHS Plant Profile

winterberry 'Oosterwijk'

visionspictures.com

Shrubs

Large, suckering, deciduous shrub, about 2m tall, with bright green, oval to lance-shaped, toothed leaves, turning yellow in autumn. Clusters of small white flowers in mid-spring, are followed by masses of very long-lasting, large red berries if pollinated by a male plant; berries persisting well into winter

Position

Full sun, Partial shade

Soil Types

Clay, Loam

Max Height

1.5-2.5 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity: 5–10 years
Max Spread: 1.5-2.5 metres
Max Height: 1.5-2.5 metres

Growing Conditions

Clay Loam

Moisture: Moist but well–drained
pH: Acid or Neutral

Position

Full sun Partial shade

Aspect: East–facing or South–facing or West–facing
Exposure: Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Aquifoliaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Suckering, Spreading branched
Potentially harmful: Fruit are ornamental - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Fruit are ornamental - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus: Ilex can be deciduous or evergreen shrubs and trees with often spiny leaves, small white flowers (male and female usually on separate plants) and, on female plants, showy berries in autumn
Name Status: Accepted

How to Grow

Cultivation

Grow in moist but well-drained neutral to acid soil in a sunny or part-shaded position. Not suited to chalky soils

Propagation

Propagate by semi-ripe cuttings in late summer or hardwood cuttings in autumn to midwinter

Suggested planting locations and garden types

Coastal
Cottage and informal garden
Wildlife gardens
Cut flowers
Flower borders and beds
Hedging and screens

Pruning

Pruning group 1; trim hedges in early spring

Pests

May be susceptible to scale insects, holly leaf miner and young shoots may be susceptible to aphids

Diseases

May be susceptible to holly leaf blight, Phytophthora root rot and sometimes honey fungus