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Bladder Campion

Silene vulgaris

Also listed as Silene cucubalus, Oberna behen

Also known as Bladder Silene, Cowbell, Sculpit

herbaceous☀️ full sun💧 low water❄ Hardy: Zone 4a – Zone 9b

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A delicate perennial wildflower with distinctive inflated, bladder-like sepals beneath small white flowers. Tolerates poor, dry soils and spreads readily, making it useful for naturalized areas and rocky sites.

Why grow it

Bladder campion establishes readily in poor, dry soils where many ornamentals struggle, making it a practical choice for rocky slopes, gravel gardens, and naturalized plantings. Its inflated sepals and delicate white flowers offer visual distinction compared to related Silene species. The plant's tolerance for minimal inputs and established drought performance align with low-maintenance perennial strategies used in extension-recommended xeriscape design.

Watch out for

Bladder campion self-seeds prolifically once established; deadheading spent flowers before seed set prevents unwanted volunteer seedlings in adjacent garden beds. In areas with consistent moisture, the plant may become leggy or prone to fungal issues, so ensure good air circulation and avoid overhead watering.

Overview

Form
Upright
Growth Rate
moderate
Size
1–2′ tall × 1–1.5′ wide
Dormancy
deciduous
Family
Caryophyllaceae
EdibleErosion controlPollinators & beneficial insects

Native Range

Europe and Asia

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Harvest Season

J
F
M
A
M
J
J
A
S
O
N
D

Edible Parts

leafflower

Season of Interest

SpringSummer

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Companion Planting

Plants well with