How to Grow Edward Bowles Clematis

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Edward Bowles Clematis

Clematis 'Edward Bowles'

vine

Edward Bowles is a deciduous clematis cultivar known for its large, nodding mauve-blue flowers with distinctive darker veining and prominent golden stamens. This vigorous vine produces abundant blooms from midsummer through fall and grows 6-8 feet tall, making it excellent for trellises, pergolas, and garden structures. The flowers are typically 4-6 inches across and face downward, creating an elegant display.

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Example Edward Bowles Clematis timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Edward Bowles Clematis

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Edward Bowles Clematis

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Edward Bowles Clematis dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun to partial shade; 6-8 hours of direct sunlight daily produces best flowering
💧
Water: Keep soil consistently moist but not waterlogged, especially during growing season and hot weather. Water deeply at the base once or twice weekly depending on rainfall and temperature.
📏
Spacing: 48 inches
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Days to maturity: Begins flowering in year 2-3; reaches mature size in 3-4 years
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Planting depth: Plant root ball at same depth as nursery pot, or slightly deeper with crown 1-2 inches below soil surface to protect against clematis wilt

Soil

Type: Well-draining, fertile loamy soil enriched with organic matter
pH: 6.5-7.5
Amendments:
Compost or aged manure Peat moss or coir Perlite or coarse sand for drainage Lime if soil is naturally acidic

Growing Zones

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Thrives in zones 4-9, with best performance in zones 5-8

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

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Growth Stages

1

Establishment

First year

Young vine with minimal growth, developing root system. Herbaceous stems emerge slowly.

Water regularly and provide sturdy support structure. Mulch heavily around base (2-3 inches) to keep roots cool and conserve moisture. Apply 1-2 inches of compost yearly.

2

Vegetative Growth

Year 2-3

Vigorous stem and foliage development with light or no flowering. Vines extend rapidly along support structure.

Prune lightly to encourage branching. Remove dead or weak growth in spring. Ensure adequate water and balanced fertilizer (low nitrogen). Monitor for pests and disease.

3

Flowering Peak

June-September (3-4 months)

Abundant mauve-blue nodding flowers with golden stamens appear along entire length of vine. Blooms are 4-6 inches across.

Continue regular watering and apply balanced or phosphorus-rich fertilizer monthly during bloom. Deadhead spent flowers to encourage continuous blooming. Provide afternoon shade in zones 8-9 to prevent flower fade.

4

Late Flowering & Senescence

September-October

Flowering continues but may slow; foliage begins to age. Seed heads form on some spent flowers.

Reduce fertilizer frequency. Continue deadheading to extend bloom. In fall, allow some flowers to remain for ornamental seed heads if desired. Prepare for dormancy.

5

Winter Dormancy

November-February

Foliage dies back; stems turn brown. Plant appears dormant.

This is a Group 3 clematis—prune stems back to 12-18 inches above ground in late winter (February-March). Remove all dead material. Mulch heavily to protect crown.

Companion Planting

Plan your garden →

Plant with:

Avoid planting near:

Other aggressive vines that compete for space Plants requiring full afternoon sun (clematis appreciates afternoon shade in hot climates) Dense shrubs that shade the base excessively

Common Pests

  • Plant deeper than usual to protect crown; remove affected stems immediately below wilted area; ensure good air circulation; avoid overhead watering; prune out dead wood promptly

  • and

    Hand-pick, use copper barriers, diatomaceous earth, or slug baits; encourage natural predators like ground beetles

  • Strong spray of water, insecticidal soap, or neem oil; introduce beneficial insects like ladybugs

  • Improve air circulation through selective pruning; apply sulfur dust or fungicide; avoid overhead watering; reduce nitrogen fertilizer

  • Increase humidity, spray with water, use miticide or insecticidal soap in severe cases

Uses

🌿

Garden Structure Coverage

Ornamental

The vigorous growth and abundant nodding flowers make Edward Bowles ideal for covering trellises, pergolas, arbors, and garden walls. Its downward-facing blooms create an elegant display at eye level when grown on structures. [source]

🦋

Pollinator Attraction

Wildlife

The large, prominent golden stamens and abundant nectar attract bees, hoverflies, and other pollinators throughout the summer and fall, supporting garden biodiversity. [source]

🎨

Cut Flowers & Arrangements

Craft

The large, distinctive mauve-blue flowers with darker veining make striking cut arrangements and flower displays, lasting 7-10 days in water when cut in the morning. [source]

🏠

Privacy & Screening

Household

When trained on sturdy structures, Edward Bowles creates an attractive living screen to provide privacy and wind protection while displaying beautiful seasonal color. [source]

Harvest Tips

Edward Bowles clematis is grown for ornamental flowers, not harvest. Cut flowers last 7-10 days in a vase. Snip stems just above a node; the plant will branch from that point, creating fuller growth. For floral arrangements, cut in early morning and immediately place in water.

Fun Facts

  • 🌱 Edward Bowles clematis is named after Edward Augustus Bowles (1865-1954), a renowned English horticulturist and garden author who cultivated an exceptional collection of rare plants at Myddelton House.
  • 🌱 The downward-nodding flowers are a distinctive characteristic that sets this cultivar apart—many clematis varieties produce upward-facing blooms, making Edward Bowles unique for creating a dramatic overhead display.
  • 🌱 Unlike many Group 3 clematis that produce only terminal flowers, Edward Bowles flowers abundantly along the entire length of the vine, providing continuous color throughout the season.

Gardening Terms

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

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