Cup and Saucer Vine (Cobaea scandens): Growing Guide for Unique Bell Flowers

Cup and Saucer Vine (Cobaea scandens)

Cobaea scandens (same as Cathedral Bells) is a vigorous climber with unique cup-and-saucer shaped flowers. Native to Mexico/Peru, discovered 17th century. Grows 4–6 ft as annual, 33 ft if perennial. Germination can be challenging (3–4 weeks). Indoor start strongly recommended.

Quick Facts

• Common Names: Cup and Saucer Vine, Cup and Saucer Flower, Cathedral Bells
• Botanical Name: Cobaea scandens
• Vine Length: 4–6 ft (annual), 33 ft (perennial)
• Bloom Time: Late Summer to Fall
• Life Cycle: Annual (usually)

Growing from Seed

• Indoor start essential: 3–4 week germination.
• Mark outdoor sowings.
• Transplant after frost. Space 8–10 in. Provide support.
• Also from cuttings.

Care Requirements

Light

Full sun.

Soil

Rich, well-draining, high organic matter.

Watering

Consistent moisture.

Fertilizer

Every 2–3 weeks general purpose. Switch to high phosphorus before bloom.

Pests & Diseases

• Red spider mites occasional. Otherwise trouble-free.