Sulphur Cosmos Seeds - Red

Sulphur Cosmos Seeds - Red

Size Price Savings Quantity
Packet $4.49
1 Ounce $13.69
1/4 Pound $33.59 ($8.39/ounce) 39% Savings
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  • Fast-growing annuals that can reach seven feet in a single season
  • Tall-growing annual with bright red blooms
  • Long-lasting summer blooms that are easy to grow
  • Thrives in bright, sunny growing areas
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Life Cycle Annual
Planting Season Spring
Color Red
Growth Habit Clumping
Plant Height 40 to 84 inches
Bloom Season Summer through Fall

Plant Characteristics Attracts Bees, Attracts Butterflies, Attracts Hummingbirds, Attracts Pollinators, Easy to Grow & Maintain, Extended Bloom Time, Fast Growing
Use Container Garden, Cut Flower Garden, Landscaping
Growing Conditions Drought Tolerant, Heat Tolerant, Poor Soil Tolerant
Plant Resistance Deer

About Sulphur Cosmos Seeds - Red

Cosmos sulphureus

Seed Type Open Pollinated Seed
Also known as Mexican Aster

Sulphur Cosmos are known for their remarkable height and Sulphur Red here is no exception. Growing to a height of 7 feet in good conditions, these fiery red cosmos are sure to ignite your wildflower passion!

Planting Information

Planting Sulphur Cosmos Seeds - Red

Planting Season Spring
Seed Prep Requires Light
Sowing Method Direct Sow
Light Requirement Full Sun
Planting Depth 1/4 inch
Plant Spacing 9 to 12 inches
Plant Height 40 to 84 inches
Water Needs Low
Hardiness Zones 2, 3, 4, 5, 6, 7, 8, 9, 10
Days to Maturity 60 to 90 days
View our Cosmos Planting Guide to learn more.


Amount Avg Seed Count Recommended Coverage
Packet 117 Up to 80 Sq. Ft
1 Ounce 3,700 Up to 625 Sq. Ft
1/4 Pound 14,800 Up to 2,500 Sq. Ft

Companions Plants

Companion Plants for Sulphur Cosmos Seeds - Red