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Product Description
Heirloom Allamanda Flower Seeds produce bright, trumpet-shaped blooms that thrive in sunny garden spaces. This heirloom variety is perfect for borders, containers, trellises, and outdoor ornamental areas. With premium-quality, non-GMO seeds, Allamanda is easy to grow, low-maintenance, and provides long-lasting, vibrant blooms that enhance any home garden.
Features & Specifications:
Heirloom variety with bright, trumpet-shaped blooms
Premium quality, non-GMO seeds
Sun-loving and easy to grow
Growth Habit: Climbing or bushy perennial
Bloom Colors: Yellow or golden shades
Bloom Time: Late spring to summer
Sunlight: Full sun
Plant Height: 4 – 10 feet (vine or bush)
Ideal For: Borders, containers, trellises, and outdoor ornamental areas
Planting Instructions:
Sow seeds ¼ inch deep in well-drained soil and keep soil consistently moist.
Start seeds indoors 6–8 weeks before the last frost or sow directly outdoors after frost passes.
Maintain warm temperatures (20–25°C) for germination in 10–14 days.
Transplant seedlings to garden beds, containers, or trellises, spacing 12–24 inches apart.
Place in full sun and water regularly, providing support for climbing plants and removing spent flowers to encourage continuous blooming.

Life Cycle
Perennial climber
Planting Season
Warm season
Growth Habit
Vigorous vine
Flavor Profile
Not edible
Plant Characteristics
Large yellow trumpets
Use
Sunny landscapes
Growing Conditions
Warm drained soils
Harvest Advantages
Long flowering
Plant Resistance
Heat tolerant
Scientific Name: Allamanda cathartica
Seed Names
Allamanda Flower
Seed Type
Heirloom non-GMO
Heirloom Allamanda is a bold, sun-loving tropical climber admired for its large, trumpet-shaped yellow flowers and lush glossy foliage. Thriving in warm climates and full sun, this non-GMO heirloom variety is ideal for home gardens, fences, pergolas, and landscape borders, delivering vibrant color and extended blooming with proper care.
Light Requirement
Full sun
Planting Depth
½ inch
Sowing Method
Nursery trays
Plant Spacing
6–10 feet
Days to Maturity
365–730 days
Soil Preparation
Soak overnight
Hardiness Zones
USDA 10–12
Water Needs
Moderate watering
Planting Season
Spring planting
Seed Count
Recommended Coverage
100
Up to 30 sq ft
500
Up to 150 sq ft
1000
Up to 300 sq ft