Thunbergia Alata
Often called the Black-eyed Susan Vine, this cheerful climber is a favorite for hanging baskets and garden trellises. Native to East Africa, it brings a burst of tropical sunshine to any landscape with its iconic dark-centered blooms that look like tiny, watchful eyes. It is a vigorous grower, capable of creating a lush, flowery screen in just a single growing season.
Despite its delicate appearance, the Black-eyed Susan Vine is so hardy and fast-growing that in certain tropical regions like Australia and Hawaii, it is actually classified as an invasive species because it can smother local vegetation!
| Color | Orange, White, Yellow, Red, Pink |
| Soil Ph | 6.5 To 7.5 |
| Humidity | Normal |
| Lighting | Full Sun |
| Soil Type | Fertile, Well-Drained |
| Bloom Time | Summer (As An Annual) |
| Difficulty | Medium |
| Plant Type | Flowering Vine, Annual Or Perennial |
| Mature Size | 3 To 8 Feet Tall And 3 To 6 Feet Wide |
| Native Area | East Africa |
| Temperature | 5°C - 25°C |
| Sun Exposure | Full Sun To Part Shade |
| Hardiness Zones | 10 To 11 |
To grow Thunbergia Alata (commonly known as Black-eyed Susan vine or Clockvine), follow these steps:


To fertilize Thunbergia Alata, mix a balanced fertilizer (10-10-10) according to package instructions. Apply the fertilizer to the soil around the base of the plant every 6-8 weeks during the growing season (spring and summer). Water the plant well after applying the fertilizer. Avoid over-fertilizing as it may cause harm to the plant.
Thunbergia Alata plant prefers a well-draining and nutrient-rich soil that is pH-balanced. A mixture of loam, sand, and organic compost makes a perfect soil composition for this plant. The loam provides good aeration and drainage, while the sand improves the structure of the soil and prevents compaction. The organic compost enriches the soil with essential nutrients, which promotes healthy growth of the plant. Additionally, it is recommended to mulch the soil around the plant to retain moisture and suppress weed growth. Overall, the soil for Thunbergia Alata plant should be rich and well-draining, providing ample nutrition and moisture for optimal growth and blooming.
Thunbergia Alata is a flowering plant that can be propagated easily through stem cuttings. Start by selecting a healthy stem that is vigorous and disease-free. From this stem, cut a section about six inches long while making sure to avoid damaging the stem. Remove the leaves from the lower two inches of the stem, leaving only the topmost leaves intact.
Next, dip the cut end in rooting hormone powder and tap off any excess. Place the cutting in a container filled with damp potting soil, and cover it with a clear plastic bag or cover. This will help create a humid environment around the cutting.
Keep the soil moist but be careful not to overwater it. After a few weeks, new growth should appear. When the cutting is well-established, remove the plastic cover and transplant it into a larger container or directly into the ground.
Ensure that the plant is kept in a spot with indirect sunlight until it has fully acclimated to its new environment. With optimal conditions and careful attention, your propagated Thunbergia Alata plant will soon flourish and bloom with its beautiful, trumpet-shaped flowers.
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