Cobaea (Cathedral Bells)

Cobaea (cup-and-saucer vine, cathedral bells) is a fast, spectacular climber with large bells that open green and deepen to violet-purple, scrambling metres up a support in a season.

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Cobaea seeds — cup-and-saucer cathedral bells

Cobaea, the cup-and-saucer vine or cathedral bells, is one of the fastest and most spectacular climbers from seed — large bell-shaped flowers that open creamy green and deepen to violet-purple, set in a leafy green “saucer,” scrambling metres up a support in a single season. It sits within our climbing flower seed range. New to flowers? Our flower growing guide gets you started.

Few climbers cover a fence so fast — the calendar shows when to sow.

A fast screen with late nectar

Self-clinging by tendrils, cobaea is a superb choice among climbing flowers for clothing a trellis or arch, and its big late-season bells are valuable to bees, placing it among our pollinator-friendly flowers.

Growing cobaea from seed

Sow under cover in early spring, setting the large flat seed on edge, and keep it warm. Plant out after the last frost into full sun with a tall, sturdy support and rich, moist soil. Once warm it grows with astonishing speed, flowering from midsummer until the frosts.

Planning a vertical display? Here's where to look next.

Popular flower categories: Climbing Flowers · Pollinator Flowers · Annual Flowers · Ornamental Flowers · All Flower Seeds

At SeedsChoice, every order ships from Meppel, NL with fast, tracked EU delivery.

Why is cobaea called the cup-and-saucer vine?
Each bell-shaped flower (the cup) sits in a leafy green calyx (the saucer), giving the plant its charming common name. How fast does cobaea grow?
Very fast — once it is warm and established it can scramble several metres in a single season, ideal for a quick screen. When should I sow cobaea seeds?
Sow under cover in early spring and plant out after the last frost. See our flower sowing calendar for timing. What support does cobaea need?
A tall, sturdy trellis, arch or netting — it climbs itself using tendrils and gets large.