Thunbergia alata

USDA Plant Hardiness Zone Map

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Thunbergia alata (Black-eyed Susans) is a vine or creeper, native to tropical eastern Africa. It is grown in USDA Zone 9-11 and can survive temperatures in the 30s F for a short time with proper protection. This vine is fast-growing and can reach up to 8-10 ft in a single season. It produces an abundance of colorful blooms throughout the summer. Attractive to butterflies and hummingbirds, the flowers are unique in their range of colors, consisting of pink, white, off-white, yellow, orange, red, and crimson. There is always a black center that gives the plant its name - Black Eye Susan.

To ensure proper growth of Thunbergia alata, it is best to plant in full sun or semi-shade. Regular watering and ensuring the soil is kept moist is important for success. In cold regions, it is wise to grow this vine in a pot, as it is susceptible to frost. When kept in a container, it should be brought indoors during winter to provide protection from freezing temperatures.

In general, Thunbergia alata is an ideal choice for landscapes or container gardens. Not only does it provide striking colors and interesting shapes, but it also attracts butterflies, hummingbirds, and other beneficial wildlife. Despite its tropical origins, with proper care and protection, this plant can be grown successfully in colder climates.

Similar plants:

• Gardenia thunbergia, Gardenia verticillata, Gardenia speciosa (White Gardenia, Forest Gardenia, Wild Gardenia)
• Thunbergia battiscombei (Bengal Clock Vine, Blue Trumpet Vine, Blue Sky vine, Scrambling sky flower, Blue Glory)
• Thunbergia coccinea (Scarlet Thunbergia)
• Thunbergia erecta (King's Mantle, Bush Clock Vine)
• Thunbergia fragrans, Thunbergia laevis (Thunbergia White gem)
• Thunbergia grandiflora (Blue Trumpet Vine, Blue Sky vine, Scrambling sky flower)
• Thunbergia gregorii (Orange Clock Vine)
• Thunbergia kirkii (Blue Sky Shrub)
• Thunbergia laurifolia (Blue Trumpet Vine, Blue Sky vine, Laurel-leaved thunbergia)
• Thunbergia mysorensis, Thunbergia Anderson x Bedd, Hexacentris mysorensis (Clock Vine, Mysore Trumpetvine)