plant quick find clear

sunlight

flower color

foliage color

plant type

height

seasonal features

special features

problem solvers

Sky Vine

Thunbergia grandiflora

Sky vine is one of the most dramatic vines around. It produces a plethora of big, lavender-blue flowers all summer long. The color harmonizes with just about everything, and the leaves create a nice backdrop for the bloom. Sky vine is a perennial in tropical areas, but in most places, it's grown as an annual where it only climbs about 12 feet.

Oops, we're sorry. Something went wrong. Please try again later.
Oops, we're sorry. Something went wrong. Please try again later.
Share your take on this idea!
Upload your photo here.
CLOSE

Light:

Sun

Height:

20 feet or more

Width:

Climbs to 30 feet

Flower Color:

Seasonal Features:

Zones:

10-11

Propagation

Easy-to-Grow Vine

A close relative of the black-eyed Susan vine, sky vine is a tropical vine with lush, ruffled purple blossoms. Like black-eyed Susan, it scrambles up trellises and trails out of pots during the heat of summer. In tropical environments, sky vine is evergreen and woody, and blooms from early summer until later winter. In cool climates, count on sky vine to bloom for several weeks from midsummer until early fall. 

Must-Know Growing Tips

Plant sky vine in full sun or part shade and well-drained soil. In Zones 10 and 11 it grows best in a location that receives shade in the afternoon. Sky vine can be hard to find in a nursery. If nursery-grown transplants are not available, start sky vine from seed.

Plant seed indoors 6 to 8 weeks before the last spring frost. Start seeds in individual planting pots filled with soilless planting mix. Sow 2 or 3 seeds in each pot. After seedlings emerge and grow 2 to 3 inches tall, thin to the strongest seedling by snipping the stem of the weak seedling at soil level. After the threat of frost passes, transplant sky vine into the garden or a container.

In tropical regions, prune sky vine in winter after the plant stops blooming. Trim vines back to desired length and remove any crossing or damaged branches. Sky vine can be rejuvenated by cutting it back to 12 inches above ground level.

Vining Ideas

Sky vine will quickly scramble up a trellis, pergola, or fence. In temperate regions where it grows as an annual, it typically climbs 10 to 12 feet. In tropical regions, expect it to climb 20 feet or more and produce woody stems. Add sky vine to a hanging basket and it will create a curtain of color. Plant it atop a wall and it will create a blossoming curtain.

Use an old window or door frame to create a rustic trellis for sky vine.

Beware of Rampant Spread

In areas where it doesn't freeze, sky vine is potentially invasive. It has been identified as an invasive species in Hawaii and could be troublesome in other areas as well. Plant it with caution in tropical areas.

Be a smart gardener—avoid these invasive species.

Oops, we're sorry. Something went wrong. Please try again later.
Oops, we're sorry. Something went wrong. Please try again later.
Share your take on this idea!
Upload your photo here.
CLOSE
close
close
close
close
close

Loading... Please wait...

Add My Photo close
I Did It!
Share on Facebook
Uh oh! Please pick a jpg at least 600x600px.
Share on Facebook
Uh oh! Your photo failed to upload. Please try again or visit your profile.
No one has shared their photo yet.
close