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How to Grow Clematis Venosa Violacea

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Clematis Venosa Violacea

Clematis viticella 'Venosa Violacea'

vine

Clematis viticella 'Venosa Violacea' is a deciduous climbing vine renowned for its stunning purple flowers with distinctive white-veined patterns. This vigorous cultivar produces masses of 2-3 inch blooms from mid-summer through fall, making it an excellent choice for garden structures and vertical interest. It is hardy, disease-resistant, and relatively low-maintenance compared to other clematis varieties.

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Example Clematis Venosa Violacea timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Clematis Venosa Violacea

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Clematis Venosa Violacea

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

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

Growing Conditions

☀️
Sun: Full sun to partial shade; minimum 6 hours of direct sunlight daily for best flowering
💧
Water: Consistent moisture during growing season; water deeply 1-2 times per week. Keep soil consistently moist but not waterlogged. Reduce watering in winter when dormant.
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Spacing: 36 inches
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Days to maturity: Flowers appear within first growing season; full maturity 2-3 years
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Planting depth: Plant with soil level at or slightly above the top of the root ball; bury stem deeper than in nursery pot to encourage multiple stems from below ground

Soil

Type: Well-draining loamy soil, slightly alkaline to neutral
pH: 6.5-7.5
Amendments:
Compost Peat moss or coir Perlite or coarse sand for drainage Lime if soil is 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 (Spring)

4-6 weeks

New growth emerges from dormant buds; tender green shoots and leaves unfold; plant may appear slow initially as it establishes root system

Water regularly to establish deep roots. Provide sturdy support structure. Light fertilizer application. Monitor for late frost damage.

2

Vegetative Growth (Late Spring to Early Summer)

6-8 weeks

Vigorous climbing growth with lush green foliage; vine extends rapidly up support; leaf buds form along stems

Train vines onto support structure. Water deeply and consistently. Light pruning to direct growth. Apply balanced fertilizer monthly.

3

Flowering (Mid-Summer to Fall)

12-16 weeks

Abundant 2-3 inch purple flowers with white veining appear along the vine; flowers open sequentially over many weeks; blooms have 6 sepals

Continue consistent watering. Deadhead spent flowers to encourage more blooms. Avoid heavy pruning during flowering. Light feeding with flower-promoting fertilizer.

4

Late Season (Fall)

4-6 weeks

Flowering continues or begins to slow; foliage may show autumn coloration; seed heads (achenes) form on spent flowers

Reduce watering slightly. Stop fertilizing by early fall. Leave decorative seed heads for winter interest if desired. Begin planning for dormancy.

5

Dormancy (Winter)

8-12 weeks

Foliage dies back completely; vine becomes bare; plant enters complete dormancy; hardiness is key at this stage

No watering needed. Do not fertilize. Prune in late winter (February-March) before new growth; cut back to 12-24 inches or to healthy buds. Mulch around base for protection.

Companion Planting

Plan your garden →

Plant with:

Roses Lavender Catmint (Nepeta) Salvia Delphinium Russian sage (Perovskia) Alliums Ornamental grasses

Avoid planting near:

Black walnut trees (juglone toxicity) Competing aggressive vines Dense shade trees that block sunlight

Common Pests

  • Spray with water to dislodge; use horticultural oil or neem oil; increase humidity; prune heavily infested shoots

  • Improve air circulation; avoid overhead watering; spray with sulfur or potassium bicarbonate; remove infected foliage

  • Plant deeply; remove affected stems immediately and burn; improve drainage; avoid wounding stems; apply fungicide if severe

  • and (Gastropoda class)

    Hand-pick in early morning; use copper tape barriers; apply diatomaceous earth; beer traps

  • Spray with strong water stream; use insecticidal soap; neem oil application; encourage beneficial insects like ladybugs

Uses

🏠

Ornamental Trellis & Garden Screening

Household

Clematis viticella 'Venosa Violacea' is excellent for covering arbors, pergolas, fences, and trellises with vibrant color. Its vigorous growth habit makes it ideal for creating vertical garden interest and screening unsightly structures or views. [source]

🍳

Cut Flowers & Floral Arrangements

Culinary

The distinctive purple flowers with white veining make stunning fresh cut flowers for bouquets and floral arrangements. They also dry well for use in everlasting arrangements and crafts. [source]

🦋

Pollinator Support & Seed Food Source

Wildlife

Clematis flowers attract bees and butterflies throughout the long blooming season. The decorative seed heads provide food and shelter for birds during winter months. [source]

🎨

Dried Decorations & Wreaths

Craft

The feathery seed heads that develop after flowering are prized for dried floral arrangements, wreaths, and other decorative crafts. They retain their ornamental appeal throughout winter. [source]

💊

Traditional Herbal Uses

Medicinal

Historically, clematis species have been used in traditional medicine for various purposes, though this cultivar is primarily grown ornamentally. Modern use is predominantly in horticulture rather than herbalism. [source]

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

Harvest Tips

Cut flowers in early morning when fully open for fresh arrangements. Cut stems 6-8 inches long with sharp pruners. For seed heads, allow to mature fully (August-September) and collect before wind dispersal for dried arrangements or propagation.

Fun Facts

  • 🌱 Clematis viticella is one of the most disease-resistant clematis species, particularly resistant to clematis wilt, making 'Venosa Violacea' an excellent choice for gardeners in challenging climates.
  • 🌱 The distinctive white veining on the purple petals inspired the cultivar name 'Venosa Violacea,' which translates to 'veined violet' in Latin.
  • 🌱 This clematis is a Group 3 pruning type (hard pruning group), meaning it can be cut back dramatically in late winter to just 1-2 feet above ground and will regrow vigorously, making it virtually impossible to kill through improper pruning.

Gardening Terms

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

Cultivar Deadhead Full Sun Mulch Partial Shade
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