Dahlia Seeds – Collarette

Dahlia ‘Collarette’ is a unique and elegant variety admired for its two-layered bloom structure featuring an outer ring of large petals surrounding a smaller inner collar of contrasting color. These radiant flowers create a striking display in garden beds, borders, and cut flower arrangements. Known for their long blooming season and vivid colors, Collarette Dahlias add a sophisticated touch to summer and fall gardens. They are easy to grow from seed, producing strong, bushy plants with multiple blooms that attract butterflies and pollinators.

Features:

• Distinctive two-tiered blooms with contrasting petal colors.

• Long-lasting flowers ideal for garden displays and arrangements.

• Attracts bees, butterflies, and other pollinators.

• Compact and bushy growth habit, perfect for garden beds or containers.

• Easy to cultivate and maintain for both beginners and experienced gardeners.

• Excellent cut flower with a long vase life.

Specifications:

• Scientific Name: Dahlia variabilis ‘Collarette’

• Common Name (US): Dahlia

• Plant Type: Tender Perennial (grown as an annual in most zones)

• Bloom Color: Various shades (red, pink, white, yellow, orange, bi-color)

• Bloom Type: Semi-double with inner collar of smaller petals

• Plant Height: 24–36 inches (60–90 cm)

• Bloom Size: 3–4 inches in diameter

• Sunlight Requirement: Full Sun

• Soil Type: Well-drained, rich, and fertile soil

• Watering: Keep soil consistently moist but not waterlogged

• Germination Time: 10–14 days

• Days to Bloom: 100–120 days after sowing

• Sowing Method: Start indoors 6–8 weeks before last frost; transplant outdoors after frost danger passes

• Spacing: 12–18 inches apart

• Growing Season: Late Spring to Fall

• USDA Hardiness Zones: 8–11 (annual in cooler zones)

• Best Planting Months (by Zone):

  • Zones 3–5: May to June

  • Zones 6–8: April to May

  • Zones 9–11: February to March

• Use: Garden borders, flower beds, cut flower gardens, decorative landscaping