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Saxifragale Bell

Campanula saxifraga (kam-PAN-yoo-luh saks-if-FRAG-uh)

Family: Campanulaceae Non-native Groundcover (<1 ft)

Saxifrage bellflower is a compact, upright, low-growing, creeping, herbaceous perennial ground cover or subshrub, native to Iran, Iraq, the North Caucasus, Transcaucasus, and Turkey. This delicate plant is typically found growing on rocks or rock crevices of alpine slopes. It presents as a clump of medium green foliage with abundant bell-shaped, blue-violet flowers from May to June. It is a member of the bellflower family (Campanulaceae). The genus name, Campanula, is derived from the Latin word campana, meaning bell, and refers to its bell-shaped flowers. The specific epithet, saxifraga , is derived from the Latin words saxum, meaning rock, and frangere , meaning to break. This refers to the plants preference to grow in the fissures of rocks. Plant in full sun to partial shade in moist, well-drained soils. It thrives in loose, coarse sand or rocky soils and prefers rock crevices or stone walls. Surround the plant with loose rock or gravel to form a collar; this will encourage adequate drainage. It is intolerant of wet soils, particularly during the winter. Its ideal temperature is from 32 to 95 degrees Fahrenheit. Although it can tolerate temperatures below -22 degrees Fahrenheit, it needs the protection of snow or fir branches to protect it from the harsh cold. It naturalizes easily and handles transplanting well. To propagate this plant, stratify the seeds by sowing them in the winter. Division in the spring is also an effective method of propagation. Saxifrage bellflower has trailing, creeping stems and reaches a height of about 4 to 6 inches. The medium green leaves are narrowly, lanceolate with serrated margins and have a downy texture. The plant may remain evergreen in certain environments. The bell-shaped flowers are fairly large for the size of the plant. It makes an excellent addition to an alpine, rock, or crevice garden and looks attractive trailing over a garden wall. Insects, Diseases, and Other Plant Problems: Very susceptible to slugs and snails. It may be difficult to find these seeds in the United States. The available mail-order sites are in Europe.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 53 attributes.

How it fits the guild

Guild layer 5 - Groundcover (<1 ft) Optimal soil pH Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Fills a similar niche Iris reticulata 'Harmony' Lotus berthelotii Thymus vulgaris

Full plant profile

Growing Conditions
Plant type
Ground Cover; Herbaceous Perennial; Wildflower
Life cycle
Perennial
USDA zones
4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Sand; Shallow Rocky
Soil pH
Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist
Available space
Less than 12 inches; 12 inches-3 feet
NC region
Coastal; Mountains; Piedmont
Mature size
Height: 0 ft. 4 in. - 0 ft. 6 in. | Width: 0 ft. 6 in. - 2 ft. 0 in.
Maintenance
Low
Canopy layer
5 - Groundcover (<1 ft)
Form & Appearance
Habit / form
Creeping
Foliage
Semi-evergreen
Leaf color
Green
Leaf type
Simple
Leaf arrangement
Alternate; Rosulate
Leaf shape
Lanceolate
Leaf margin
Serrate
Leaf feel
Soft
Leaf size
1-3 inches long, < 1 inch wide
Hairs present
Yes
Leaf detail
The leaves are narrow, lanceolate, medium green, slightly hairy, with finely serrated margins. They measure 1 to 2 inches long.
Flower color
Blue; Purple/Lavender; White
Flower value
Showy
Flower form
Solitary
Flower shape
Bell
Flower size
< 1 inch
Flower detail
The flowers are solitary and arise on a short green stem. They are large, broad, bell-shaped, blue-violet with white centers, and extend above the mound of low-growing foliage. The flowers are large for the size of the plant and have 5 petals that curve backwards. Blossoms occur from late spring to early summer.
Bloom time
Spring; Summer
Fruit type
Capsule
Stem color
Green
Stem detail
The stems are erect, green, with minimal foliage.
Wildlife & Ecology
Native status
Non-native
Origin
Turkey to Iran
Distribution
Native: Iran, Iraq, North Caucasus, Transcaucasus, and Turkey
Attracts
Bees; Butterflies; Hummingbirds
Play value
Attractive Flowers; Colorful
Food & Medicine
Fruit type
Capsule
Landscape Use
Landscape location
Rock Wall
Landscape theme
Rock Garden
Design feature
Mass Planting; Small groups
Garden tags
#rock garden #crevice garden #small spaces #herbaceous perennial #flowers late spring #flowers early summer #showy flowers #subshrub #low maintenance #garden walls #naturalized area #blue flowers #purple flowers #alpine
Problems & Resistance
Propagation
Division; Seed

Planted at Hunnicutt

Nobody’s planted this one yet.