Charles Star Black-Eyed Susan
Thunbergia alata 'Charles Star'
Charles Star Black-Eyed Susan flowers
(Photo courtesy of NetPS Plant Finder)
Height: 10 feet
Spread: 24 inches
Hardiness Zone: (annual)
Charles Star Black-Eyed Susan features bold yellow tubular flowers with brown throats and orange centers along the stems from late spring to mid fall. Its serrated heart-shaped leaves remain green in color throughout the season. The fruit is not ornamentally significant.
Charles Star Black-Eyed Susan is an herbaceous annual with a ground-hugging habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.
This plant 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.
Charles Star Black-Eyed Susan is recommended for the following landscape applications;
- General Garden Use
- Container Planting
- Hanging Baskets
Planting & Growing
Charles Star Black-Eyed Susan will grow to be about 10 feet tall at maturity, with a spread of 24 inches. As a climbing vine, it should either 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. Although it's not a true annual, this fast-growing plant can be expected to behave as an annual in our climate if left outdoors over the winter, usually needing replacement the following year. As such, gardeners should take into consideration that it will perform differently than it would in its native habitat.
This plant 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 is a selected variety of a species not originally from North America. It can be propagated by cuttings; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.
Charles Star Black-Eyed Susan is a fine choice for the garden, but it is also a good selection for planting 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. It is even sizeable enough that it can be grown alone in a suitable container. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.