How to Grow Bell's Underwood Heather

Bell's Underwood Heather

Erica underwooodii 'Bells'

shrub

Bell's Underwood Heather is a compact, low-growing evergreen shrub prized for its delicate pink flowers and fine, needle-like foliage. This cultivar is a hybrid heather that blooms prolifically during late summer and fall, providing valuable color when many gardens are fading. It is particularly valued by gardeners seeking Mediterranean or naturalistic garden designs.

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Example Bell's Underwood Heather timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Bell's Underwood 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 Bell's Underwood Heather

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Bell's Underwood Heather dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily; light afternoon shade in very hot climates
💧
Water: Moderate water needs; keep soil consistently moist but not waterlogged. Water regularly during establishment and dry spells. Prefers moderate humidity. Drought-tolerant once established.
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Spacing: 18 inches
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Days to maturity: Not applicable; reaches mature size in 2-3 years
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Planting depth: Plant at same depth as root ball; do not bury crown

Soil

Type: Well-draining, sandy or gravelly soil with low fertility
pH: 4.5-5.5
Amendments:
Perlite or coarse sand for drainage Peat moss to lower pH if needed Avoid compost or manure

Growing Zones

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Thrives in zones 7-9; performs best in cooler microclimates within zone 9

7a 7b 8a 8b 9a 9b

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Growth Stages

1

Establishment

6-12 months

Young transplant with fine, needle-like foliage; minimal flowering

Water regularly to keep soil consistently moist; apply mulch (sand or gravel) around base; protect from wind in first year

2

Vegetative Growth

12-24 months

Plant expands horizontally and vertically; dense foliage develops; minimal flowers

Prune lightly after flowering to maintain compact shape; continue regular watering; avoid over-fertilizing

3

Flowering

8-12 weeks

Dense spikes of delicate pink flowers appear among dark green foliage; peak color from late August through October

Deadhead spent flowers if desired to encourage continued blooming; maintain consistent moisture; do not fertilize during bloom

4

Post-Bloom

4-6 weeks

Flowers fade to brown; plant remains attractive with persistent seed heads; foliage may take on bronzy tones in cooler weather

Light pruning to remove dead flowers and shape plant; reduce watering slightly as cooler weather approaches

5

Winter Dormancy

3-4 months

Plant enters semi-dormant state with minimal growth; foliage darkens but remains ornamental

Reduce watering; avoid fertilizing; protect from harsh winds; no pruning needed in winter

Companion Planting

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Plant with:

Avoid planting near:

Heavy feeders (nitrogen-rich soil lovers) Plants requiring alkaline soil Shade-casting trees Plants requiring frequent deep watering

Common Pests

  • Increase humidity with occasional misting; spray with horticultural oil or insecticidal soap if severe

  • Ensure excellent drainage; do not overwater; improve air circulation; remove affected plants if infected

  • Prune out affected stems; spray with insecticidal soap in early spring if populations are high

  • Ensure good air circulation; avoid wetting foliage; spray with sulfur or fungicide if necessary

Uses

🌿

Late Summer Flowering Color

Ornamental

Bell's Underwood Heather provides exceptional pink blooms from late August through October, offering vibrant color when many perennials are fading. Its prolific flowering makes it invaluable for extending the season in borders and containers. [source]

🌿

Low-Maintenance Groundcover

Landscape

With its compact, spreading habit and evergreen foliage, this heather serves as an excellent low-maintenance groundcover or edging plant for rock gardens and Mediterranean landscapes. Once established, it requires minimal pruning and supplemental watering. [source]

🎨

Cut and Dried Flowers

Craft

The delicate pink flower spikes are excellent for fresh flower arrangements and dry exceptionally well for long-lasting dried arrangements. Harvest stems with flowers in the morning for best color and longevity. [source]

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Pollinator Support

Wildlife

Bell's Underwood Heather is an excellent late-season nectar and pollen source for bees, butterflies, and other pollinators during a critical time when many other plants have finished flowering. [source]

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Container and Patio Growing

Household

The compact size and moderate growth habit make this heather ideal for container gardening on patios and decks. It performs well in specialized heather soil mixes and can be moved to protect from extreme cold. [source]

Harvest Tips

This is an ornamental shrub not harvested for consumption. Cut sprigs with flowers for fresh arrangements in late summer through fall. Flowers dry well and can be used in dried arrangements.

Fun Facts

  • 🌱 Bell's Underwood Heather is a hybrid cultivar that combines vigor and flower production superior to many species heathers, making it a favorite of gardeners in milder climates.
  • 🌱 Heathers have been used in traditional Scottish gardens and moorlands for centuries, and modern cultivars like 'Bells' extend this heritage to contemporary ornamental landscapes.
  • 🌱 The name 'Underwood' refers to the parent species Erica underwoordii, a rare heather native to the border regions of Spain and Portugal.

Gardening Terms

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

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