All flowers
Orange Clock Vine Wikimedia Commons
Acanthaceae

Orange Clock Vine

Thunbergia gregorii

Bright persistence and tropical energy.

Family
Acanthaceae
Genus
Thunbergia
Native to
East Africa
Bloom season
Spring, Summer, Fall
Type
perennial vine
Height
6-10 ft
Sunlight
full sun to part shade
Soil
moist, well-drained, fertile
Water
moderate
Hardiness
10-11
Lifespan
perennial

Did you know

  • Unlike its cousin the black-eyed Susan vine, it lacks the dark center, showing a pure, vivid orange throughout.
  • Named for Carl Peter Thunberg, the 'father of South African botany,' who studied under Linnaeus.
  • It can bloom almost year-round in frost-free climates, producing flowers continuously for months.
  • In Hawaii it has escaped cultivation and is listed as an invasive species in moist forest edges.
  • The flowers are tubular and attract hummingbirds and long-tongued butterflies as primary pollinators.

Color meanings

0

enthusiasm

1

warmth

2

exploration

Uses

  • trellises and arbors
  • ground cover
  • hanging baskets
  • tropical gardens