Blue Bells Clematis (Clematis integrifolia), a delightful, non-vining species of clematis, is prized for its charming, nodding, bell-shaped flowers. Unlike the more common vining varieties, this clematis grows in a bushy, compact form, making it an excellent choice for perennial borders, rock gardens, and containers. The vibrant blue flowers bloom from late spring through summer, attracting pollinators such as bees and butterflies.

This guide provides detailed information on how to successfully grow, maintain, and care for Blue Bells Clematis, ensuring a stunning display season after season.

1. Understanding Blue Bells Clematis

Characteristics

Botanical Name: Clematis integrifolia
Common Names: Blue Bells Clematis, Bush Clematis
Plant Type: Herbaceous perennial
Growth Habit: Bushy, non-vining, trailing or sprawling
Height & Spread: 18-36 inches tall and wide
Flower Color: Deep blue to violet, nodding bell-shaped blooms
Bloom Time: Late spring to late summer (May–August)
Foliage: Green, lance-shaped leaves
Lifespan: Long-lived perennial, with proper care

2. Ideal Growing Conditions

Light Requirements

Prefers full sun to partial shade.
At least 6 hours of direct sunlight ensures optimal flowering.
Can tolerate light shade, but too much reduces flower production.

Soil Preferences

Prefers moist, well-draining soil rich in organic matter.
Ideal soil pH: Neutral to slightly alkaline (6.5-7.5).
Adding compost or aged manure improves soil fertility.

Hardiness Zones

Grows best in USDA Zones 3-9.
Cold-hardy and tolerates frost with proper winter care.

3. Planting Blue Bells Clematis

Best Planting Time

Spring or early fall is ideal for planting.
Fall planting allows the plant to establish roots before winter.

How to Plant from Nursery Pots

Choose a location with good drainage and plenty of sunlight.
Dig a hole twice the width of the root ball and slightly deeper.
Loosen the roots gently before planting.
Position the plant so that the crown is level with the soil surface.
Backfill with soil, pressing gently to remove air pockets.
Water thoroughly after planting.
Mulch lightly around the base to retain moisture and regulate temperature.

4. Watering Requirements

Newly Planted Clematis: Water deeply 2-3 times per week until established.
Established Plants:
- Water once a week during dry spells.
- Ensure soil remains moist but not soggy.
Avoid overhead watering to prevent fungal issues.

5. Fertilization Needs

Apply a balanced fertilizer (10-10-10 or 5-10-10) in early spring.
Fertilize monthly during the growing season for abundant blooms.
Organic options: Compost, fish emulsion, or aged manure improve soil fertility.
Avoid excessive nitrogen, which promotes excess foliage at the expense of flowers.

6. Pruning and Maintenance

When and How to Prune

Blue Bells Clematis belongs to Pruning Group 3:
- Blooms on new growth, so cut back to 6-12 inches in late winter or early spring.
- Removing old stems encourages fresh, vigorous growth.

Deadheading

Removing spent flowers encourages continuous blooming.
Helps prevent excessive self-seeding if unwanted.

General Maintenance

Mulch annually to retain moisture and suppress weeds.
Support with stakes or small trellises if sprawling stems need assistance.
Divide every 3-5 years if the plant becomes overcrowded.

7. Propagation Methods

By Seeds

Collect seeds from mature pods in late summer.
Cold stratify seeds for 3-6 weeks in a refrigerator before sowing.
Sow in well-draining soil in early spring.
Germination takes 2-4 weeks under ideal conditions.

By Stem Cuttings

Take 4-6 inch cuttings from healthy stems in early summer.
Remove lower leaves and dip in rooting hormone.
Plant in a moist, well-draining mix.
Keep in a humid, shaded area until roots develop (4-6 weeks).
Transplant to the garden when strong enough.

8. Common Pests and Diseases

Pests

Aphids – Can be controlled with insecticidal soap or neem oil.
Slugs & Snails – Use diatomaceous earth or organic slug baits.
Spider Mites – Increase humidity and spray with neem oil if needed.

Diseases

Powdery Mildew – Improve air circulation and avoid overhead watering.
Clematis Wilt – A serious fungal issue causing sudden wilting; remove affected stems promptly.
Root Rot – Prevent by ensuring proper soil drainage.

9. Winter Care

Cold-Hardy Zones (3-7):
- Add a layer of mulch (2-3 inches) around the base for insulation.
- Prune back to 6-12 inches before winter.
Warmer Climates (8-9):
- May remain semi-evergreen, requiring only light pruning.
- Continue watering if conditions are dry.

10. Landscape Uses and Benefits

Ideal Uses

Perennial borders
Rock gardens
Pollinator gardens (attracts bees and butterflies)
Containers and patio gardens
Edging and pathway plantings

Companion Plants

Salvia – Provides contrasting spikes of color.
Hostas – Add foliage texture in shady spots.
Daylilies – Complementary bloom times.
Coneflowers (Echinacea) – Attracts pollinators.
Ferns – Lush foliage pairs well with Clematis’ delicate flowers.

11. Frequently Asked Questions

Q: How long does Blue Bells Clematis live?

With proper care, it can thrive for 10+ years.

Q: Can I grow Blue Bells Clematis in a container?

Yes! Use a large pot (at least 12 inches deep) with well-draining soil.

Q: Does it spread aggressively?

No, but it may self-seed in ideal conditions.

Q: Can it tolerate drought?

It prefers consistent moisture, but once established, it can handle short dry periods.

Q: Is it deer-resistant?

Moderately deer-resistant, but young shoots may need protection.

Conclusion

Blue Bells Clematis is a low-maintenance, stunning perennial perfect for gardeners of all skill levels. By providing full sun, well-drained soil, and occasional pruning, you’ll enjoy an abundance of charming blue, bell-shaped flowers throughout the growing season. With proper care, this clematis will add beauty and elegance to your garden for years to come.

How to Care for Blue Bells Clematis