North America Non-native Plant

Earleaf Bellflower

Botanical name: Campanula cochlearifolia

USDA symbol: CACO83

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Canada  

Earleaf Bellflower: A Charming Alpine Ground Cover for Your Garden If you’re looking for a delicate, low-growing perennial that produces masses of tiny bell-shaped flowers, the earleaf bellflower might just capture your heart. This charming little plant, known botanically as Campanula cochlearifolia, brings a touch of alpine elegance to gardens ...

Earleaf Bellflower: A Charming Alpine Ground Cover for Your Garden

If you’re looking for a delicate, low-growing perennial that produces masses of tiny bell-shaped flowers, the earleaf bellflower might just capture your heart. This charming little plant, known botanically as Campanula cochlearifolia, brings a touch of alpine elegance to gardens with its dainty blooms and carpet-forming habit.

What Is Earleaf Bellflower?

Earleaf bellflower is a perennial forb – essentially a non-woody herbaceous plant that comes back year after year. Despite its delicate appearance, this tough little survivor originates from the rocky mountain slopes of the European Alps, where it has evolved to thrive in challenging conditions.

This plant is considered non-native in North America, having been introduced and naturalized in parts of Canada, particularly Ontario. While it reproduces on its own in the wild, it’s not currently classified as invasive, making it a relatively safe choice for gardeners who appreciate its unique charm.

Why You Might Want to Grow Earleaf Bellflower

There are several compelling reasons why gardeners fall in love with this diminutive beauty:

  • Stunning flowers: The tiny, nodding bell-shaped blooms in shades of blue, purple, or white create a magical carpet of color from summer into early fall
  • Low maintenance: Once established, it’s remarkably drought-tolerant and requires minimal care
  • Versatile size: Growing only 3-6 inches tall but spreading 6-12 inches wide, it fits perfectly in small spaces
  • Pollinator magnet: The nectar-rich flowers attract bees and other small pollinators to your garden
  • Long blooming period: Flowers appear from mid-summer through fall, providing extended color

Perfect Garden Settings

Earleaf bellflower truly shines in specific garden situations:

  • Rock gardens: Its alpine heritage makes it perfect for tucking between stones
  • Alpine and scree gardens: Mimics its natural mountain habitat
  • Border edges: Creates a neat, colorful border along pathways
  • Container gardens: Excellent for shallow pots and alpine troughs
  • Ground cover: Forms attractive mats in small areas

Growing Conditions and Care

The secret to success with earleaf bellflower lies in understanding its mountain origins. Here’s what it needs to thrive:

Sunlight: Full sun to partial shade – morning sun with afternoon shade works well in hot climates

Soil: Well-draining soil is absolutely crucial. It tolerates poor, rocky soils but will struggle in heavy, waterlogged conditions

Hardiness: Tough enough for USDA zones 3-7, making it suitable for most northern climates

Watering: Water regularly during establishment, then reduce frequency. Once mature, it’s quite drought-tolerant

Planting and Maintenance Tips

Getting started with earleaf bellflower is straightforward:

  • Plant in spring or early fall when temperatures are moderate
  • Space plants 6-8 inches apart to allow for spreading
  • Add gravel or sand to heavy soils to improve drainage
  • Deadhead spent flowers to encourage continued blooming
  • Divide clumps every 3-4 years in spring or fall to maintain vigor
  • Watch for self-seeding – remove unwanted seedlings to control spread

Consider Native Alternatives

While earleaf bellflower can be a lovely addition to your garden, you might also consider these native alternatives that provide similar benefits:

  • Wild columbine (Aquilegia canadensis): Native perennial with delicate flowers
  • Wild ginger (Asarum canadense): Native ground cover for shaded areas
  • Creeping phlox (Phlox subulata): Native mat-forming perennial with spring flowers

The Bottom Line

Earleaf bellflower offers gardeners a chance to grow a piece of alpine beauty in their own backyard. While it’s not native to North America, its well-behaved nature and stunning appearance make it a worthwhile addition to rock gardens and alpine settings. Just remember to provide excellent drainage and enjoy the delightful carpet of bells it will create in your garden.

Whether you choose to grow this charming European native or opt for native alternatives, the key is creating a garden that brings you joy while supporting local ecosystems. Happy gardening!

Earleaf Bellflower

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Campanulales

Family

Campanulaceae Juss. - Bellflower family

Genus

Campanula L. - bellflower

Species

Campanula cochlearifolia Lam. - earleaf bellflower

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA