Cosmos Seeds - Radiance
- Easy to grow annual with long-lasting blooms
- Pollinator attractor with pink Summer blooms
- Thrives in full sun or partially shaded areas
Fast Facts
About Cosmos Seeds - Radiance
Cosmos bipinnatus
Buy Cosmos Seeds by the Packet or in Bulk
Cosmos Seeds - "Radiance"
Radiance Cosmos seeds produce the classic cosmos that everyone adores. The deep, wine red of the petals pairs beautifully with the yellow center. The Radiance Cosmos, like all other cosmoses, is simple to grow; even novice gardeners will have no trouble growing these 3 to 5 foot beauties. Order your seeds today, and in mid-summer, you'll be beaming with pride at the blooms on your Radiance Cosmos flowers!
Fast Facts
About Cosmos Seeds - Radiance
Cosmos bipinnatus
Buy Cosmos Seeds by the Packet or in Bulk
Cosmos Seeds - "Radiance"
Radiance Cosmos seeds produce the classic cosmos that everyone adores. The deep, wine red of the petals pairs beautifully with the yellow center. The Radiance Cosmos, like all other cosmoses, is simple to grow; even novice gardeners will have no trouble growing these 3 to 5 foot beauties. Order your seeds today, and in mid-summer, you'll be beaming with pride at the blooms on your Radiance Cosmos flowers!
How to Plant Radiance 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.
Seed Coverage for Cosmos Seeds - Radiance
| Amount |
Recommended Coverage |
| Packet |
Up to 80 Sq. Ft |
| 1 Ounce |
Up to 625 Sq. Ft |
| 1/4 Pound |
Up to 2,500 Sq. Ft |
| 1 Pound |
Up to 10,000 Sq. Ft |
Companion Plants for Cosmos Seeds - Radiance
Aesthetic or Culinary
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