Grandiflora Thunbergia Plant

Grandiflora Thunbergia is an enthusiastic grower that features sky blue blooms with a sweet yellow eye. As a twirling and twining vine, it does best with some structure, like a trellis, as it can quickly take over the area. Commonly called Black-eyed Susan Vine, its perfect for your hanging baskets, adding vertical interest or even as ground cover!

Planting Instructions:

• - Plant in spring after the last frost date

Soil Preparation:

• - Ideal soil pH: 6.0-7.5

Watering Specifics:

• - Allow the top inch of soil to dry out between waterings

Fertilizer Type:

• - Apply a balanced, water-soluble fertilizer every 2-3 weeks during the growing season

Pruning and Training:

• - Train vines to climb on trellises, arbors, or fences for vertical interest
• - Prune lightly to control shape and remove dead or overcrowded growth

Additional Pest Management:

• - Watch for common pests like aphids and whiteflies
• - Monitor for fungal diseases, especially in humid conditions

Blooming Indicators:

• - Produces vibrant, trumpet-shaped flowers in shades of yellow, orange, and white, often with a dark center
• - Blooms continuously from late spring through fall

Light Requirements:

• - Thrives in full sun but can tolerate partial shade, especially in hot climates
• - Requires at least 4-6 hours of direct sunlight daily for optimal blooming

Temperature Tolerance:

• - Thrives in temperatures between 65-80°F
• - Can tolerate heat but may require more frequent watering during hot spells
• - Frost-tender; bring indoors or protect when temperatures drop below 50°F

Companion Plants for Thunbergia:

Thunbergia pairs well with a variety of complementary plants that share similar growing conditions. Some excellent companions include:

• - Clematis: This climbing plant pairs beautifully with Thunbergia on trellises, providing a stunning mix of flowers
• - Salvia: The spiky blooms of Salvia contrast nicely with Thunbergia’s rounded flowers
• - Verbena: These trailing plants add a splash of color and texture to the base of Thunbergia vines
• - Zinnias: The bold colors of Zinnias make a striking combination with Thunbergia in garden beds