Product Description

Overview

Yellow Thunbergia Flower Seeds grow into fast-growing, climbing or trailing plants admired for their cheerful yellow trumpet-shaped blooms with contrasting dark centers. Commonly known as Black-Eyed Susan Vine, Thunbergia is prized for its rapid growth, long blooming season, and excellent performance in vertical gardens. Perfect for trellises, fences, pergolas, balcony railings, hanging baskets, and large containers, Yellow Thunbergia adds height, movement, and vibrant summer color to any garden space.

Features

Premium-quality, non-GMO Yellow Thunbergia Flower Seeds
Produces bright yellow trumpet-shaped blooms with dark centers
Ideal for trellises, fences, pots, hanging baskets, and balconies
Strong germination with fast-growing climbing or trailing habit
Long blooming season from spring through autumn
Excellent heat tolerance and vigorous growth
Highly attractive to bees and beneficial pollinators
Low-maintenance and beginner-friendly flowering climber

Specifications

Plant Type: Annual Climbing Vine
Common Name: Yellow Thunbergia, Black-Eyed Susan Vine
Scientific Name: Thunbergia alata
Variety: Yellow Flowering Type
GMO Status: Non-GMO
Heirloom: Yes
Growth Season: Spring–summer to autumn
USDA Zones: 9–11 (grown as annual in cooler zones)
Sun Exposure: Full sun to partial shade
Soil Type: Well-drained, moderately fertile garden soil
Bloom Time: Late spring to autumn
Plant Height / Spread: 5–8 feet (climbing)
Spacing: 12–18 inches
Watering: Moderate (keep soil evenly moist, not soggy)

Planting Guide

Sowing Method: Start indoors in trays or direct sow outdoors
Seed Preparation: Soak seeds in water for 6–8 hours before sowing
Sowing Depth: 1/4 inch deep
Germination Time: 7–14 days
Ideal Temperature: 20–28°C
Transplanting: Transplant when seedlings are strong and well-rooted