RHS Plants
RHS Plants

Shop

Information & Help

My account

Cobaea scandens f.alba

white-flowered cup-and-saucer vine

15% off
Product Image
This fast growing, evergreen perennial climber will quickly cover a sunny wall, arch or obelisk and produce large, sweetly-scented flowers from midsummer to the first frosts. A rarer form of Cobaea, the white bell-shaped flowers add an exotic touch to a summer planting scheme. Plant Cobaea scandens f. alba near a window or busy pathway to enjoy the perfume.

How to care for Cobaea scandens f. alba:

Cup and saucer plant is a vigorous climber that thrives in the UK and is commonly grown as a fast-growing annual. Plant out only after the last frosts, in fertile, well-drained soil with plenty of organic matter added. Choose a sunny, sheltered spot with strong support such as a trellis, arch, or pergola, as it will quickly scramble several metres in a season if conditions allow.

Sowing instructions:

Sow the seeds horizontally, 1cm deep in deep pots using freely-draining compost and water well. Keep them warm under glass (ideally at 18°C or 64°F) and pot on when large enough to handle.

Harden off gradually and plant outside after all risk of frost has passed. Plants can be overwintered under glass, but are mainly grown as annuals in the UK.
Flowering period:
  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec
Eventual height:
10m
Eventual spread:
2m
Position:

Full sun

Rate of growth:

Fast-growing

Soil:

Moderately fertile, moist, well-drained soil

Hardiness:

Frost tender

Product options

1
Buy Now
Delivery options (pick your preferred option at checkout)
Seed Packets (only)£2.99
Named Day Delivery£10.99

Goes well with
Add to wishlist

Elaeagnus × submacrophylla

oleaster ( syn. Elaeagnus × ebbingei )

From £26.99
View options
Add to wishlist

Clematis × triternata 'Rubromarginata'

clematis (group 3)

From £17.99
View options
Add to wishlist

Wooden seed tray

From £19.99
View options
Add to wishlist

Tall galvanised metal root trainer pots - set of 6

£14.99
View details
Add to wishlist

Deep root trainers

From £12.99
View options
Become an RHS Member today and save 25% on your first year
Join now

Keep in touch

View our Privacy Policy
Contact us
Cookies
Terms
Privacy

© RHS Enterprises Limited 2026
Registered in England & Wales No. 01211648. | VAT No. GB461532757 | Registered Office: 80 Vincent Square, London, SW1P 2PE.

All sales help fund the charitable work of the RHS.