How to Grow Besom Heather

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Besom Heather

Calluna vulgaris

shrub

Besom heather is a low-growing, woody evergreen shrub native to Europe that produces delicate bell-shaped flowers in pink, purple, or white. It is highly valued for its ornamental foliage and long-lasting blooms, as well as its traditional use in broom-making. This hardy plant forms dense mats and is excellent for ground cover, rock gardens, and moorland landscapes.

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Example Besom Heather timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Besom Heather

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Besom Heather

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Besom Heather dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily for best flowering
💧
Water: Moderate water needs; drought-tolerant once established. Water regularly during first growing season. Prefers consistently moist but not waterlogged soil. Reduce watering in winter.
📏
Spacing: 18-24 inches apart for ground cover; varies by variety inches
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Days to maturity: Blooming begins in 1-2 years from transplants; mature plants 2-3 years
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Planting depth: Plant so top of root ball is level with soil surface; do not bury crown

Soil

Type: Well-draining, sandy or gravelly soil; acidic preferred
pH: 4.5-5.5
Amendments:
Peat moss or composted bark to improve drainage and acidity Grit or coarse sand for heavy clay soils Avoid lime or alkaline amendments

Growing Zones

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Thrives in zones 4-9; prefers cooler climates in zones 4-7

4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a

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Growth Stages

1

Establishment

3-6 months

Young plant settling into the landscape with initial root development and modest upright growth

Water regularly to establish deep roots. Mulch around base with acidic material like pine bark. Protect from harsh winter winds in first year.

2

Vegetative Growth

Spring through early summer

Plant produces dense foliage of small, needle-like leaves with minimal flowering as it builds vigor

Light pruning after flowering to maintain compact shape. Remove any dead or damaged wood. Avoid heavy nitrogen fertilizer which encourages soft growth.

3

Pre-flowering

4-6 weeks before bloom

Plant develops flower buds along stem tips; foliage may show bronze or reddish tints

Reduce supplemental watering if rainfall is adequate. Do not fertilize heavily. Allow plant to stress slightly to encourage blooming.

4

Flowering

6-12 weeks, typically late summer to fall

Delicate bell-shaped flowers bloom in pink, purple, red, or white along the stems; very ornamental

Enjoy the blooms without deadheading unless desired for appearance. Flowers attract pollinators. Provide some afternoon shade in very hot regions (zones 8-9).

5

Dormancy & Winter

November through March

Foliage may deepen in color; plant remains evergreen but growth slows dramatically

Minimal watering needed. Do not prune heavily in late fall as new growth is tender. Provide windbreak in exposed locations. Mulch well in zone 4.

Companion Planting

Plan your garden →

Plant with:

Avoid planting near:

Lime-loving plants (clematis, lilac) Plants preferring neutral to alkaline soil Dense shade-producing trees

Common Pests

  • Increase humidity by misting in dry conditions; spray with neem oil or insecticidal soap if severe

  • Remove heavily infested shoots; prune to encourage new healthy growth; insecticide spray if widespread damage

  • Ensure excellent drainage; avoid waterlogging; remove and destroy severely affected plants; do not plant in wet sites

  • Improve air circulation; reduce watering of foliage; fungicide spray if necessary in humid climates

Uses

🎨

Broom Making

Craft

Besom heather has long been used to make traditional brooms and brushes due to its flexible stems and dense branching. The plant's name 'besom' directly references this centuries-old craft. [source]

🏠

Decorative Dried Flowers

Household

The long-lasting flowers dry beautifully and are popular in dried floral arrangements, wreaths, and bouquets. They retain color and form for extended periods. [source]

💊

Traditional Herbal Remedy

Medicinal

Historically used in herbal medicine to support urinary and kidney health, often prepared as a tea or infusion from flowering tops. Contains bioactive compounds with potential diuretic properties. [source]

🦋

Pollinator & Wildlife Habitat

Wildlife

Flowers attract bees, butterflies, and other pollinators; provides shelter and nesting sites for small birds and beneficial insects in moorland and garden settings. [source]

🍳

Honey & Beverage Flavor

Culinary

Heather flowers are a primary nectar source for moorland honey, imparting a distinctive flavor and color. Flowers can also be used to flavor teas and cordials. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

For floral arrangements, cut stems of flowers in full bloom early in the morning. For traditional besom brooms, harvest mature shoots in late summer/early fall when stems are pliable but firm. Flowers can be dried by hanging bundles upside-down in a cool, dark, dry location for 2-3 weeks.

Fun Facts

  • 🌱 Besom heather's scientific name Calluna comes from the Greek word 'kallyno' meaning 'to clean,' referencing its long use in broom-making throughout Europe.
  • 🌱 In Scotland and Northern Europe, heather moorlands can cover thousands of acres and are managed specifically to maintain heather populations; they are considered culturally and ecologically important landscapes.
  • 🌱 Calluna vulgaris is remarkably long-lived for a shrub, with some individual plants documented to be over 400 years old, making it a symbol of endurance and permanence.

Gardening Terms

New to gardening? Learn about terms used in this guide:

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