
How do you sow Cobaea seeds?
- Choose a medium to large paper coffee cup, and punch drain holes in the bottom of the cup using a sharp object, like a nail.
- Line the bottom of the cup with small rocks or pebbles.
- Add potting soil to the cup, filling the cup three-quarters full.
- Insert several seeds into the soil, pushing down about ¼ inch.
- For best results, sow indoors, covering the seed with four times their thickness in soil.
- Alternate the temperature within the medium between 68° F nights and 86° F days.
- Sow outdoors in late spring and cover the seeds.
- Maintain a temperature alternating between 55° F nights and 72° F days.
How do you grow cobaea from seed?
Cobaea should be started about two months before the seedlings are due to be transplanted in the middle of spring after the last possible frost. Seedlings should be spaced at about one meter into a sunny part of the garden. Once growing the tips of Cobaea should be pinched to create branching.
Can You propagate Cobaea scandens from seed?
While Cobaea scandens is normally propagated from seed, there is no denying that Cobaea scandens seed tends to be rather expensive. Cobaea scandens flowers readily, however getting fertile seeds from your garden-grown plants can be next to impossible.
How do you grow cathedral bell cobaea from seed?
If planning to grow Cobaea from seeds indoors then the seeds should be nicked with a knife and sown in peat pots then covered lightly wit topsoil. Cathedral bells take around two to four weeks to germinate and should be grown at about 22 to 24 degrees centigrade.
How long does it take for cobaea bells to germinate?
Cathedral bells take around two to four weeks to germinate and should be grown at about 22 to 24 degrees centigrade. Cobaea should be started about two months before the seedlings are due to be transplanted in the middle of spring after the last possible frost. Seedlings should be spaced at about one meter into a sunny part of the garden.

Should I soak Cobaea seeds?
Cobaea will normally flower 20 weeks from sowing and if grown in a greenhouse will flower for 8 months of the year. Soak the seed in luke warm water for two hours then sow into individual 3 inch pots filled with good quality, moist seed compost.
How do you sow Cobaea?
Sow seeds on their edge just below the surface of your compost. I like to sow into 9 cm square pots. They MUST be carefully hardened off before planting out after the frosts have finished frostifiying. If you sow later than mid April the season may not be long enough for them to flower…
How long do Cobaea seeds take to germinate?
21-30 daysGermination takes 21-30 days. For indoor sowings transplant seedlings once large enough to handle 13cm pots. Acclimatise and plant out after danger of frost has passed. Once planted out this is easy to grow.
How do I start Cobaea scandens from seed?
HOW TO GROW Cobaea scandensDepth: Place seed on edge and just cover.Sprout Time: 10-25 days.Starting Indoors: Recommended. ... Starting Outdoors: Sow in place after last frost in areas that have longer growing seasons, such as zones 9-10.More items...
When should I start Cobaea seeds?
Sow outdoors in late spring and cover the seeds. Maintain a temperature alternating between 55° F nights and 72° F days. Germination takes 10-20 days.
Can you grow Cobaea in pots?
Cobaea scandens can be grown in a large pot (at least in diameter) in large cool greenhouse or conservatory, as long as suitable wires are provided for it to cling to.
Can you overwinter Cobaea?
Cobaea will behave as a perennial if kept indoors over winter at about 7°C (45°F). Outdoor plants may survive a very mild winter, in a very sheltered position with some protection, but Cobea grows quickly enough to be considered an annual if conditions don't favour it surviving the winter.
How do you care for Cobaea?
Cobaea is native to Mexico – it loves heat and doesn't like too much water. Rotting can also be a danger once the plant is outside if the summer is exceptionally wet. However, as Sarah explains, 'if you mulch the plants quite deeply (6 inches of dry mulch), you will be able to overwinter and perennialize them.
How do you propagate Cobaea scandens?
How to Propagate Cobaea Cathedral BellsPlant the seeds in a tray of sandy potting soil.Keep the tray in a room that stays about 60° degrees Fahrenheit.After the seedlings appear, keep the tray at 60° degrees Fahrenheit.After several leaves appear, place the seedlings in their own pots.More items...
Do Cobaea seeds need light to germinate?
Cobaea must be mature enough to bloom. As such, must produce a certain number of leaves during a period of summer with high ultraviolet light (as in Central America). Thus it is believed that light intensity and maturity stimulated plants to bloom.
How long do cup and saucer vine seeds take to germinate?
two to four weeksGrow Cup and Saucer Vine From Seed Germination can be erratic, but you should see sprouts within two to four weeks.
Do you pinch out Cobaea?
It's best to support the plant, which produces tendrils to cling onto the support. They like full sun and well-drained soil. You can help the vine by training it onto a trellis or support as it grows. Pinching out the tip of the vine will make it grow lateral shoots.
How warm does it need to be for Cobaea scandens to germinate?
Place them on a warm south-facing windowsill in your house or into a heated propagator. A temperature of 20-25’C is ideal for the germination of Cobaea scandens.
Can Cobaea scandens grow in a pot?
Cobaea scandens grows surprisingly quickly once it gets going. What’s more, as a vine it’s tendrils will grab onto anything placed near the pot. Planting lots of Cobaea scandens seeds in a single small container can lead to a real mess some weeks down the line as they will have all plaited together into an uncontrollable mess.
Do Cobaea scandens need light?
Cobaea scandens does not need light to germinate so feel free to well-cover the seeds. They like moist conditions to germinate so a decent covering of compost can help to keep the seeds damp in their sensitive early days of growth.
How long does it take for a vine to sprout?
Germination can be erratic, but you should see sprouts within two to four weeks. Because the vines become entangled, you should start them in separate pots filled with ordinary potting mix.
Do cup and saucer vines need soil?
While your cup and saucer vine is not particular about soil pH or soil type, it does need a well-draining soil to thrive. Additionally, mixing in some organic matter into your soil will keep your plant growing strong and blooming without the addition of fertilizers.
Does cup and saucer vine grow over an arbor?
Although cup and saucer vine takes awhile to start blooming, its foliage will quickly create a screen, grow over an arbor, or cover an unsightly fence. Featured Video. The plant has plentiful bright green leaves that are oblong in shape.
Can you grow a cup and saucer vine from seed?
Grow Cup and Saucer Vine From Seed. Cup and saucer vine will readily self-seed, and the seedlings can be transplanted into other locations if you wish to spread your vines about. The seeds can also be collected for planting wherever you choose.
Planting and Growing Cobaea
Grow in a sunny sheltered spot, supported by a warm wall, archway, obelisk or trellis. Climbs using tendrils.
Propagating Cobaea
Sow seeds in March under glass in a gentle heat (around 18°C). Soak seeds for a few hours before sowing. Pot on, harden off and plant out once all danger of frost has passed in your area.
Popular Varieties of Cobaea
Cobaea scandens (Mexican cup-and-saucer vine) is the main species. A quick-growing climber with fragrant purple flowers. Supported height to 10ft (3m). Variety 'Alba' has off-white (yellowish green) flowers. For sale at Crocus.
When was Cobaea scandens introduced?
Cobaea scandens. 100% Guaranteed! Read our guarantee. Known as Mexican climbing cobaea when it was introduced in 1792, the development of the flowers is a show unto itself. They start out as green, five-cornered, papery buds, then open to reveal the green saucer and bell-shaped flower.
What is a cup and saucer plant?
Cup & Saucer is an elegant plant for trellis and arbors. Place plants in a warm, protected southern exposure in short-season gardens, while in warmer climates, a location with an east or west exposure will be adequate. As the plant matures, the tendrils will cling to almost any rough surface. If growing in containers, select a pot that drains well and use a rich, well-draining potting mix. Cut, it is an unusual choice that lasts well.
