How to Grow Mrs. D. F. Maxwell

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Mrs. D. F. Maxwell

Calluna vulgaris 'Mrs. D. F. Maxwell'

shrub

Mrs. D. F. Maxwell is a cultivar of Scots heather, a low-growing evergreen shrub prized for its vivid double flowers that bloom in late summer to fall. The plant produces striking magenta-pink flowers on compact mounding foliage, making it an excellent choice for rocky gardens, moorland-style landscapes, and containers. It's a hardy, low-maintenance perennial that attracts pollinators and provides year-round structure.

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Example Mrs. D. F. Maxwell timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Mrs. D. F. Maxwell

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Mrs. D. F. Maxwell

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Mrs. D. F. Maxwell dates for your own zip code.

Growing Conditions

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Sun: Full sun, 6+ hours daily; tolerates light afternoon shade in hotter climates
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Water: Moderate moisture; water regularly during establishment and dry periods. Avoid waterlogging. Once established, quite drought-tolerant. Prefers consistent but not wet soil.
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Spacing: 18-24 inches apart for mature spread inches
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Days to maturity: Not applicable; perennial shrub reaches mature size in 3-4 years
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Planting depth: Plant transplants at the same depth as nursery container; shallow-rooted, so mulch carefully around base

Soil

Type: Well-draining, sandy loam with acidic conditions
pH: 4.5-5.5
Amendments:
Peat moss Sand Sulfur if soil pH is too high Composted bark

Growing Zones

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Thrives in zones 5-8, with some success in zone 4b

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

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Growth Stages

1

Establishment

First 6-8 weeks

Young transplant with initial compact growth and minimal branching

Water regularly to establish deep roots. Apply 1-2 inches of acidic mulch (pine bark). Protect from wind in first year.

2

Vegetative Growth

First year to second year

Plant develops dense, mounding foliage with needle-like evergreen leaves; no flowering yet

Light pruning after flowering encourages bushier growth. Deadhead spent flowers. Maintain consistent moisture.

3

Flowering

August to October (8-12 weeks)

Double magenta-pink flowers emerge on terminal spikes; blooms are abundant and long-lasting

Allow flowers to fully develop. No deadheading needed if you enjoy the look, but deadheading can extend flowering slightly.

4

Post-Bloom Rest

October to March

Flowers fade to brownish tones; foliage may deepen in color with cooler temperatures; plant enters dormancy

Late winter pruning (February-March) to remove dead flower heads and shape plant. Cut just below old flower stems.

5

Winter Dormancy

December to February

Plant remains evergreen but growth slows; foliage color may intensify to bronze or reddish tones

Minimal watering needed in cool/wet climates. Ensure good drainage to prevent root rot in winter. Monitor for snow damage.

Companion Planting

Plan your garden →

Plant with:

Erica carnea (winter heather) Juniper Gaultheria procumbens (wintergreen) Festuca glauca (blue fescue) Cistus (rock rose) Conifers (dwarf varieties) Lavender Artemisia

Avoid planting near:

Lime-loving plants (alkaline-soil plants) Heavy feeders that require frequent watering Plants requiring rich, moist soils

Common Pests

  • Spray with water to dislodge; use neem oil or insecticidal soap if severe. Improve air circulation.

  • Prune out affected stems. Apply insecticidal soap in spring. Maintain plant vigor through proper care.

  • Ensure good air circulation. Avoid overhead watering. Apply sulfur dust or fungicide if needed; choose varieties resistant to mildew.

  • Ensure excellent drainage. Do not overwater. Remove affected plants if severely infected. Improve soil amendment.

Uses

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Garden ornament and landscape color

Ornamental

Mrs. D. F. Maxwell's vivid magenta-pink double flowers provide striking color in late summer and fall gardens. The evergreen foliage offers year-round texture and structure. [source]

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Pollinator support

Wildlife

Heather flowers are excellent nectar sources for bees, butterflies, and other pollinators during the late growing season when food may be scarce. [source]

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Cut flowers and arrangements

Household

The long-lasting flower spikes are excellent for fresh and dried floral arrangements, providing late-season color to bouquets and indoor displays. [source]

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Heather tea and honey

Culinary

Heather flowers can be steeped to make a mild, delicate tea with subtle floral notes. Heather is also an important nectar source for honey production in traditional heathland regions. [source]

Harvest Tips

Not typically harvested. Flowers may be cut fresh for arrangements in late summer to fall. Cut stems in the morning when flowers are fully opened. Deadhead spent flower clusters by cutting just below the blooms in late fall or early spring to encourage bushier growth and prevent seed set.

Fun Facts

  • 🌱 Mrs. D. F. Maxwell was named after the wife of a Scottish botanist, and heather remains culturally iconic in Scotland, where vast moorlands are dominated by Calluna vulgaris.
  • 🌱 Double-flowered heather varieties like Mrs. D. F. Maxwell have ruffled, multi-petaled blooms that last exceptionally long—sometimes persisting into early winter—making them superior to single-flower types for ornamental use.
  • 🌱 Heather is extremely long-lived; individual plants can persist for 20-30+ years, and some wild heathland plants are over 100 years old, with beautiful silvery wood visible on old stems.

Gardening Terms

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