Plant Finder Tool

vine

Orange Clock Vine

Thunbergia gregorii

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Orange Clock Vine (Thunbergia gregorii) at Rainbow Gardens

Orange Clock Vine flowers

Orange Clock Vine flowers

(Photo courtesy of NetPS Plant Finder)

Height:  10 feet

Spread:  24 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  9a

Other Names:  syn. Thunbergia gibsonii

Ornamental Features

Orange Clock Vine features bold orange tubular flowers along the branches from early summer to mid fall. It has green foliage throughout the season. The heart-shaped leaves do not develop any appreciable fall color. The fruit is not ornamentally significant.

Landscape Attributes

Orange Clock Vine is a multi-stemmed deciduous woody vine with a twining and trailing habit of growth. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition.

This woody vine will require occasional maintenance and upkeep, and can be pruned at anytime. It is a good choice for attracting butterflies to your yard. It has no significant negative characteristics.

Orange Clock Vine is recommended for the following landscape applications;

  • Accent
  • Hedges/Screening
  • General Garden Use
  • Container Planting
  • Hanging Baskets

Planting & Growing

Orange Clock Vine will grow to be about 10 feet tall at maturity, with a spread of 24 inches. As a climbing vine, it tends to be leggy near the base and should be underplanted with low-growing facer plants. It should be planted near a fence, trellis or other landscape structure where it can be trained to grow upwards on it, or allowed to trail off a retaining wall or slope. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 5 years.

This woody vine does best in full sun to partial shade. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is not originally from North America. It can be propagated by cuttings.

Orange Clock Vine makes a fine choice for the outdoor landscape, but it is also well-suited for use in outdoor containers and hanging baskets. Because of its spreading habit of growth, it is ideally suited for use as a 'spiller' in the 'spiller-thriller-filler' container combination; plant it near the edges where it can spill gracefully over the pot. Note that when grown in a container, it may not perform exactly as indicated on the tag - this is to be expected. Also note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Accent  Screening  Garden  Container  Basket 
Applications
Flowers  Attracts Wildlife 
Ornamental Features

Disclaimer - This Plant Finder tool is an online resource representing many of the varieties that we carry over the course of the season, and is intended for informational purposes only. Inventory varies seasonally, so we cannot guarantee that every plant will be in stock at all times - please contact the store directly for current availability. It does not include our entire selection of plants, so be sure to visit our store to see varieties that may not be represented on this list.