Sulphur Cosmos Flower Seeds – Bright Orange-Yellow Blooming Variety

Overview

Sulphur Cosmos Seeds grow into brilliant, sun-loving flowers that add fiery orange and golden-yellow hues to gardens. Known for their resilience and ease of care, these fast-growing annuals bloom continuously throughout summer and fall.

Ideal for wildflower gardens, pollinator habitats, and borders, Sulphur Cosmos attract bees, butterflies, and beneficial insects while thriving in hot and dry conditions. Their low-maintenance nature makes them a top choice for both beginner and seasoned gardeners.

Features

• Premium quality non-GMO Sulphur Cosmos seeds
• Produces vivid orange and yellow daisy-like blooms
• Heat- and drought-tolerant, perfect for warm climates
• Excellent for wildflower gardens, pollinator patches, and borders
• Long blooming period from summer to frost
• Attracts bees, butterflies, and hummingbirds

Specifications

• Common Name (US): Sulphur Cosmos / Yellow Cosmos (Cosmos sulphureus)
• Seed Type: Annual flowering plant, open-pollinated, non-GMO
• Planting Season: Spring through early summer (after last frost)
• USDA Hardiness Zones: 2–11 (annual in all zones)
• Sunlight Requirements: Full sun (6–8 hours daily)
• Soil Type: Well-drained, moderately fertile to poor soil; pH 6.0–7.5
• Sowing Method: Direct sow outdoors after frost; cover seeds lightly (¼ inch)
• Germination Time: 7–10 days at 70–85°F
• Days to Maturity: 70–90 days from sowing
• Spacing: 12–18 inches between plants
• Plant Height: 18–48 inches tall (depending on variety)
• Watering Needs: Low; drought-tolerant once established
• Bloom Season: Summer through fall
• Yield: Continuous blooms throughout warm months
• Storage Use: Seeds can be collected and stored for the next planting season