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Sulphur Cosmos Seeds - Red Cosmos sulphureus

Buy Cosmos Seeds by the Packet or in Bulk

Unit Size Unit Price Savings Qty
Packet $3.95
1 Ounce $11.95
1/4 Pound $28.95 39%
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  • Tall-growing annual with bright red blooms
  • Long-lasting summer blooms that are easy to grow
  • Thrives in bright, sunny growing areas

Product Description

Cosmos Seeds - Sulphur Red - Sulphur Cosmos

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!

  • Fast Facts

    Name:Sulphur Cosmos Seeds - Red
    Botanical Name:Cosmos sulphureus
    Life Cycle:Annual
    Light Requirement:Full Sun
    Planting Season:Spring
    Plant Type:Semi-Double Saucer-Shaped Flowers, Clumping Habit, Pinnatifid Leaf Shape
    Features:Open Pollinated, Attracts Pollinators, Easy to Grow & Maintain, Fast Growing, Poor Soil Tolerant, Extended Bloom Time, Cut Flower Garden
    Color:Red, Orange
    Blooms:Summer, Late Summer, Early Fall, Fall
    Days to Maturity:60-90 Days
    Plant Height:40-84 inches
    Plant Spacing:9-12 inches
    Planting Depth:1/4 inch
    Sowing Method:Direct Sow
    Cold Stratification:No
    Seeds per Pound:68, 000
    Hardiness Zones:2, 3, 4, 5, 6, 7, 8, 9, 10
    Ships:Year Round
  • Planting Instructions

    How to Plant Red Cosmos Seeds

    About Cosmos

    This Mexico native is one of the simplest flowers to grow, and they are suitable for all zones. Since they reseed themselves easily, they make perfect additions to wildflower meadows or naturalized areas. Children will love planting their cosmos seeds and watching them grow taller than they are!

    When to Plant Cosmos Seeds

    Plant Cosmos in the Spring when the soil can be worked.

    Where to Plant Cosmos Seeds

    Sow your Cosmos seeds in the full sun to partial shade. As cosmos flowers are very adaptable, they can thrive in average to poor soil quality, and they are tolerant to dry conditions.

    How to Plant Cosmos Seeds

    Scatter cosmos seeds outdoors after there is no longer a danger for frost. Seeds can be covered ¼ inch since they do not need light to germinate. Germination will usually occur in just 3 to 5 days, but it can take up to 2 weeks.

    How to Care for Cosmos

    Once started, cosmoses require virtually no attention. You can add a general purpose fertilizer once or twice a season. If a plant grows very tall and is not planted in a wind protected area, it may require staking. If you want blooms all summer long, dead head the old blooms.

    Download Printable Planting Guide

  • Planting Video

  • Seed Coverage

    AmountRecommended Coverage
      
    PacketUp to 80 Sq. Ft
    Ounce PackageUp to 625 Sq. Ft
    1/4 Pound PackageUp to 2,500 Sq. Ft
    1 Pound SackUp to10,000 Sq. Ft
    5 Pound SackUp to 1.3 Acres

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