Clustered Bellflower
campanula glomerata
Also known as: ["Danish Bellflower","Globeflower Bellflower"]
Overview
A herbaceous perennial with bell-shaped blue or purple flowers clustered at the top of stems, native to Europe.
Benefits & Perks
["long-flowering","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Asterales |
| Family: | Campanulaceae |
| Genus: | Campanula |
| Botanical Name: | Campanula glomerata |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: garden bed or container in a sunny to partially shaded spot
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–30°C"}
- Hardiness: {"zones":"3–8"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, loamy soil with added organic matter; can use cactus mix with compost.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: Deadhead spent flowers regularly; shape pruning in early spring or after flowering.
- Pruning Intensity: Light to moderate; avoid heavy pruning unless necessary to control size.
Care Details
Ideal Sunlight Coverage:
Full sun to partial shade (4–6 hours of direct sunlight daily); adjust to dappled light in hot climates.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight; protect from harsh afternoon sun; place in filtered light during peak summer.
Care Requirements
Care Difficulty
easymoderate
Sunlight
full sun to partial shade
Rotate plant weekly for even growth; use sheer curtains to filter intense light; avoid direct sun in midday.
Watering
every 7–10 days during active growth, reduce in winter
Water thoroughly but infrequently; ensure soil dries slightly between waterings; avoid overhead watering to prevent fungal issues.
Soil
well-draining, fertile, slightly alkaline soil
pH: Slightly acidic to neutral (pH 6.0–7.0).
Use raised beds for better drainage; avoid heavy clay soils; amend with organic matter annually.
Temperature
Prefers cool to moderate temperatures (60–75°F or 15–24°C); tolerates cooler nights.
Avoid sudden temperature fluctuations; protect from frost; ensure good air circulation.
Fertilizing
every 4–6 weeks during growing season
Apply fertilizer after watering to prevent root burn; stop feeding in late summer to prepare for dormancy; flush soil occasionally to prevent salt buildup.
Propagation
Methods
Stem cuttings or division of clumps; stem cuttings are more common for home growers.
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Keep moist and warm.
Best Time: Early spring or late summer when the plant is actively growing.
Environment
Warm, humid environment with indirect light; maintain consistent moisture.
Medium
Well-draining potting mix with perlite or sand; can also use peat-based mix.
Hormone
Rooting hormone is optional but recommended for faster rooting.
Timeline
Roots develop in 3–4 weeks; new growth appears in 6–8 weeks.
Tools Needed
Pruning shears, rooting hormone, small pots, well-draining mix.
Quick Tips
Use healthy, non-flowering stems; maintain high humidity with a plastic cover; avoid direct sunlight.
Pruning & Repotting
Pruning Guide
Method
Pinch back tips for bushier growth; cut just above a leaf node or bud.
Pruning Plan
Prune to maintain shape, encourage bushier growth, and remove spent flowers for prolonged blooming.
Tools
Clean, sharp pruning shears or scissors.
Checklist
Sanitize tools; prune dead or damaged stems; remove spent flowers; shape as needed.
Repotting Guide
Best Season
Early spring before new growth begins.
Pot Size
Choose a pot 1–2 inches larger in diameter than the current one.
Method
Remove plant gently; trim roots if crowded; place in new pot with fresh soil; water lightly.
Suggestions
Repot every 2–3 years or when roots fill the pot; beneficial for rejuvenation and fresh soil.
Checklist
Select appropriate pot; prepare fresh soil mix; handle roots carefully; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture; water deeply; ensure drainage; avoid wetting leaves.
How to Apply Water Properly
Water at the base of the plant, ensuring moisture reaches the root zone; allow excess water to drain away; water in the morning to reduce evaporation and fungal risk.
Watering Schedule Tips
Water deeply once the top inch of soil feels dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or sand for drainage; incorporate compost for fertility; ensure good aeration.
Temperature Stress Management
Signs of Temperature Issues
Wilting, leaf scorch, or stunted growth in excessive heat; leaf drop or root rot in cold stress.
Cold Stress
Slows growth, causes leaf discoloration, and increases susceptibility to root rot in cold, damp conditions.
Solution: Move to a warmer location; insulate pots with bubble wrap; avoid overwatering in cold weather.
Hot Stress
Leaves may wilt, scorch, or drop; flowering may be reduced in extreme heat.
Solution: Provide shade during peak heat; increase humidity with misting; water early in the day.
Fertilizing Guide
Fertilizing Checklist
Check fertilizer type; dilute correctly; apply during active growth; avoid winter feeding.
Fertilizing Method
Use balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season (spring to early summer); avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicCampanula glomerata is not considered toxic to cats. It has no known adverse physiological effects when ingested.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
Non-toxicCampanula glomerata is not considered toxic to dogs. It has no known adverse physiological effects when ingested.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Non-toxicCampanula glomerata is not considered toxic to humans. It has no known adverse physiological effects when ingested.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: How do I propagate Campanula glomerata?
A: It can be propagated by division in spring or by seed sown in autumn or early spring.
Q: What are the ideal growing conditions for Campanula glomerata?
A: It thrives in full sun to partial shade with well-drained soil and moderate moisture.
Q: Does Campanula glomerata attract pollinators?
A: Yes, its flowers are highly attractive to bees and butterflies.
Quick Reference
| Family: | Campanulaceae |
| Care: | easy |
| Light: | full sun to partial shade |
| Water: | every 7–10 days during activ |
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