Cup and Saucer Vine Purple produces purple bell-shaped flowers surrounded by broad green calyces that resemble little saucers. Long, pale stamens extend from each bloom, creating a striking display over garden arches, trellises, fences and balcony supports.
Native to Mexico, this vigorous climber develops leafy stems and curling tendrils that grip its support. Give it room to climb and a long growing season to enjoy its fullest display.
Why Gardeners Love It
-
Purple Bells: Distinctive flowers with flared edges and prominent pale stamens.
-
Decorative Saucers: Green calyces frame the flowers and give the vine its name.
-
Leafy Coverage: Helps cover trellises, fences and garden screens.
-
Vertical Colour: Brings flowers to arches, pergolas and balcony supports.
-
Unusual Cut Flowers: Flowering stems and tendrils add interest to arrangements.
Best Conditions
-
Germination: Usually 10–25 days; occasionally up to 30 days
-
Germination temperature: Around 18–24°C
-
Sunlight: At least 6 hours
-
Pot size: A deep 12-inch pot or larger for one plant
-
Spacing: About 18–24 inches between plants
-
Climbing height: Usually around 10–15 feet with suitable support
-
Soil: Fertile, moisture-retentive and well-draining mix
-
First flowers: Usually around 14–20 weeks, sometimes longer
-
Support: A firmly secured trellis, climbing net or wire framework
Sowing note: In Lahore and Faisalabad, start seeds under protection from February to March. In Islamabad and Rawalpindi, sow from March to April and plant outdoors after frost risk has passed. In Karachi and other frost-free areas, sow from September to November, or again from February to March. In colder northern and hilly areas, sow from April to May once the weather warms.
How to Sow
- Soak the seeds in lukewarm water for around two hours.
- Fill individual starter pots with moist, well-draining seed starter mix.
- Insert one seed upright on its narrow edge and cover lightly with the mix.
- Water gently and keep the mix moist without leaving it waterlogged.
- Once seedlings develop several true leaves, add a small supporting cane.
- Gradually introduce them to outdoor conditions, then transplant with the root balls intact.
Plant Care
Water thoroughly when the upper inch of soil begins drying, allowing excess water to drain. Keep the roots evenly moist as the vine develops more foliage. Guide young shoots onto the support and use loose ties until their tendrils take hold.
Mix a small amount of Vermicompost into the soil before planting. Container plants benefit from supplementary feeding during active growth, following the fertiliser label. Check leaf undersides for aphids and spider mites; if needed, apply Neem Oil at its labelled dilution.
Local Gardener Tips
- Train early shoots across the lower support before allowing them to climb higher.
- Keep tendrils away from small neighbouring plants that could become tangled.
- On exposed rooftops, secure the climbing frame independently of the pot.
- Give seedlings temporary afternoon shade when first planting them out during warm weather.
Flowering
Display the vine where its hanging bells can be seen from the side, such as along an archway or pergola edge. The flowers stand out against the leafy growth, while the green saucers and curling tendrils add detail between blooms.
A few freshly opened flowers can be cut with their stems for informal arrangements. Leave enough leafy growth on the vine to support continued development.
FAQs
Why are some flowers pale green instead of purple?
New flowers open pale green or creamy white and gradually deepen to violet-purple. Several stages can appear on the same vine at once, so pale flowers do not necessarily mean you have received the wrong colour.
Will Cup and Saucer Vine grow again next year?
It is a tender perennial and may continue growing in warm, frost-free locations. In colder parts of Pakistan, frost can kill the vine, so it is commonly grown again from seed or kept in a protected, bright location over winter.
Common names: Cup and Saucer Vine, Cathedral Bells, Monastery Bells, Cobaea
