Winterberry 'Berry Heavy'

Pépinière Lemay Nursery

$39.99
Title

'Berry Heavy' is the gold standard of winterberry hollies, specifically bred to produce a massive, "heavy" crop of oversized, scarlet-red berries that cling to bare, ebony-toned stems. Because this shrub drops its leaves in autumn, the vibrant fruit is left completely exposed, creating a breathtaking contrast against a backdrop of fresh white snow. It’s like having a living holiday decoration right in your yard—a spectacular, ruby-studded masterpiece that remains vivid long after other plants have faded for the season.

Photo courtesy of Proven Winners or www.provenwinners.com

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Plant Details

Mature Size:

6–8' High x 6–8' Wide

Zone:

3–9

Watering:

High

Foliage Type:

Deciduous

Growth Rate:

Slow - Moderate

Light:

Full Sun

Plant Profile

Common Names:

Winterberry Holly, Black Alder, Swamp Holly, Michigan Holly

Scientific Name:

Ilex verticillata 'Spravy' (Trade name: Berry Heavy®)

Type:

Ornamental Shrub / Native Deciduous Shrub

Growth Details:

  • Mature Size: 6–8 feet tall and wide.
  • Growth Habit: Upright, rounded, and multi-stemmed.
  • Form: Dense and bushy mounded shrub.
  • Growth Rate: Slow to Medium.
  • Longevity: Can live for 40 years or more under ideal conditions.

Environmental Needs:

  • Exposure: Full sun, partial sun, or partial shade.
  • Soil Preferences: Rich, acidic (pH 5.5–6.5), organic loams.
  • Soil Tolerance: Highly tolerant of heavy clay, poorly drained soil, and boggy conditions.
  • Watering: Abundant; do not let established plants dry out completely.

Special Features:

Native species; deer and rabbit resistant; salt tolerant; outstanding fruit for holiday floral arrangements.

Care Guide

Ornamental & Landscape Value

Seasonal Interest:

  • Bloom Information: Tiny, inconspicuous white flowers in late spring (May/June).
  • Fall Colour: Leaves stay dark green before dropping; berries turn vivid red.
  • Bark: Smooth grey-brown bark; winter interest comes from berry-laden bare stems.
  • Fruit: Spectacular, closely-packed bright red berries that persist through winter.

Garden Value:

Perfect for mass plantings, mixed borders, and cutting gardens. Its tolerance for "wet feet" makes it ideal for rain gardens, bioswales, and pond edges.

Wildlife & Human Value:

  • Wildlife Value: Critical late-winter food source for songbirds like Bluebirds and Cedar Waxwings; attracts pollinators.
  • Human Value: High ornamental value for winter curb appeal; cut branches are prized for indoor holiday décor.

Planting & Care Guide

Planting Considerations:

  • Best Time To Plant: Spring or Autumn.
  • Spacing: 2–3 feet for tight hedges; 5–8 feet for individual specimens.
  • Location Tips: Requires a male pollinator (like Mr. Poppins® or Jim Dandy) planted within 50 feet to produce berries.

Care:

  • Light Requirements: Full sun (6+ hours) to partial shade; full sun produces the most berries.
  • Moisture Requirements: High; prefers consistent moisture and thrives in wet areas.
  • Maintenance: Low; avoid regular pruning as it flowers on old wood.
  • Fertilization: Apply a balanced fertilizer or one for acid-loving plants in early spring if growth is slow.

Tolerances:

Wet soil, clay soil, urban pollution, and extreme cold.

Tips For Success:

Plant one male for every 5–7 female plants to ensure maximum berry production. Mulch heavily with 2–3 inches of shredded bark to protect shallow roots.

Fruit Profile