Cobaea scandens 'Purple'

Cobaea scandens 'Purple' will clamber up and over your garden wall. It is a fantastic, exotic looking plant with buds in green-white, deepening to purple as they age. More
20 seeds 050002 £2.50 In stock
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5 seedlings 510815-5 £7.95
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Cobaea scandens 'Purple' will clamber up and over your garden wall. It is a fantastic, exotic looking plant with buds in green-white, deepening to purple as they age.

I've picked a bunch of these in December on a sheltered wall in Sussex. Use them floating in a shallow bowl or simply mixed with rosemary in a tumbler.

These are rampant climbers which will cover a wall in a trice – growing up to a 2nd storey window if given a climbing frame. Or, perfect for following sweet peas, as they flower long and hard from mid summer to winter.

Genus Cobaea scandens
Variety Purple
Type Half-Hardy Annual Climber
Common Name Cup and Saucer Vine, Cathedral Bells
Border Position Climber
Soil Type Fertile, Neutral
Scent Unscented
Site Full Sun, Shelter
Moisture Moist but Well-drained, Well-drained
Height 6m (20ft)
Spacing 15cm (6in) apart at the base of a frame or wall
Sowing, Seeds, Planting Sow under cover January-March and support on a mini frame as it grows, then train onto a tall frame or wired wall. Plant out after last frost.
Flowering July - October, 20 weeks from sowing
Vase Life 5 days, can be floated with nightlights in a shallow bowl. Sear the stem ends in boiling water for 20 seconds to extend the vase life.
Harvesting Flowers will produce for 4 months, or almost 12 months of the year if grown in a greenhouse.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest
Sarah's blog: Dahlia winners

There’s a plant combination that has won the top prize in the garden this summer...

The very best annual climbers

Sow these climbers in your garden in the spring, and you'll enjoy them well into the autumn.


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Seeds Delivery - Items will be despatched in 5-7 working days.

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Cobaea scandens 'Purple' reviews

* * * * * Average based on 3 reviews
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Reviewed 9th June 2018 by Alison Moy

Really my garden is too shady for these (walled, north facing) but I couldn't resist them. I ordered 5 seedlings and grew them on a bit in pots. I have one at the front of the house (south facing) where I am optimistic it will gallop away and completely smother our house (please!). I have 2 at the back against the far south facing wall where they seem to be very happy to cling to the bricks and make their way up the wall (the biggest is about 4 foot now). I planted one in semi shade as an experiment; that one is actually doing really quite well. My last one is in a really poor section of the garden (usually referred to as death row!) where it has galloped up a little bay tree. I'm hoping to encourage it onto the trellising on top of the nearby wall. I can't wait to see them go crazy and hopefully flower their doo-dahs off all summer.

Cobaea scandens - just glorious !

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Reviewed 29th December 2017 by Lou Montagu

These seeds really took off this year, I germinated and planted 5 seedlings around two 12 ft wooden obelisks. The foliage quickly covered them and we had perpetual flowering from August right through until early December. Simply stunning ! Great for cut flowers, they have a slightly chocolaty smell. This year I am going to try and train them over a perimeter fence.


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Reviewed 6th October 2017 by Val Ward

The plants have shot up our west facing wall but we haven't had a single flower.

Pruning instructions would be useful.

Reply from the Sarah Raven Team:

"Thank you for taking time to review our site. We would normally expect the Cobaea seedlings to be flowering by now, but like quite a few plants it does seem to be later this summer to get going. Being a native of Mexico it likes a run of warm weather to encourage flowers and we suspect the changeable weather we have experienced this year has not helped. Having said that, being one of the later annual climbers to get going means that it does flower right up until the frosts and if you are growing it in a pot then you could fetch the plants inside to a greenhouse or conservatory to continue enjoying the flowers. Keep the plants moist if we have a dry spell and fingers crossed you will start to notice the flower buds very shortly.
If we can help you in any way please do contact our customer service team at or by calling 0345 092 0283 and our team will assist you further.
Kind Regards, The Sarah Raven Team


Posted 6th October 2017