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Products > Thunbergia grandiflora
 
Thunbergia grandiflora - Blue Sky Flower
   

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Habit and Cultural Information
Category: Vine
Family: Acanthaceae (Acanthus¹)
Origin: India (Asia)
Evergreen: Yes
Flower Color: Blue
Bloomtime: Spring/Fall
Height: Climbing (Vine)
Width: Spreading
Exposure: Sun or Shade
Irrigation (H2O Info): Medium Water Needs
Winter Hardiness: 25-30° F
Thunbergia grandiflora (Blue Sky Flower) - A vigorous evergreen vine with rope-like stems with dark green leaves that are often 4-5 inches long and have a slightly toothed margin. From mid-summer to fall appear the beautiful 3 inch wide, pale blue , tubular flaring flowers that are cup-like with pale yellow to cream blue striped centers. This plant can climb high and wide onto supporting structures or trees. Plant in full sun or in a shaded location (this vine will find the sun!). Can be watered regularly to only occasionally. It is hardy and evergreen to 25° F and if frozen to the ground (as it was here in our very cold December 1990 at 18° F) it can resprout and grow into a large vine within one season. This plant naturally ranges from China (Fujian, Guangdong, Guangxi, Hainan, Yunnan) India, Myanmar, Thailand and Vietnam but has also naturalized in tropical regions worldwide. The name for the genus honors the Swedish naturalist Carl Peter Thunberg (1743-1828) who was a student of Linnaeus and spent several years botanizing the Cape of Good Hope. The specific epithet is from the Latin words 'grandis' meaning "great" or "large" and 'flora' meaning "flower" in reference to the flowers which are large for the genus. Another common name for this plant is Bengal Clock Vine.  This description is based on research and observations of this plant as it grows in our nursery, in our nursery garden and in other gardens that we visit. We also incorporate comments received and appreciate getting feedback of any kind from those who have any additional information about this plant, particularly if they disagree with what we have written or if they have additional cultural tips that would aid others in growing Thunbergia grandiflora.
 
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