Cosmos Seeds - Radiance Cosmos bipinnatus
- Annual; Grows up to 44 Inches
- A vigorous, versatile and resilient wildflower
- Adaptable to both Sun and partial Shade
Availability & Turnaround Time
All seeds are shipped year-round, while flower bulbs are shipped on a seasonal basis. Typical turnaround times for in-stock items is between 2 – 5 business days.
| Category | Shipping Period |
|---|---|
| All Seeds: | |
| Zones 2 – 10 | Year-Round |
| Spring Planted Bulbs & Perennials (March - June): | |
| Zones 8 – 10 Pre-Orders | Mid March |
| Zones 7 Pre-Orders | Late March-Early April |
| Zones 6 Pre-Orders | Early-Mid April |
| Zones 5 Pre-Orders | Mid-Late April |
| Zones 2 – 4 Pre-Orders | Late April-Early May |
| All Zones Ship Until Inventory is Sold Out | May - June |
| Saffron Crocus & Bearded Iris (Late August - November): | |
| All Zones | Start Shipping late August |
| Fall Planted Bulbs & Perennials (September - January): | |
| Zones 2-4 Pre-Orders | Mid September |
| Zones 5 Pre-Orders | Mid-Late September |
| Zones 6 Pre-Orders | Late September |
| Zones 7 Pre-Orders | Late September - Early October |
| Zones 8-10 Pre-Orders | Early October |
| All Zones Ship Until Inventory is Sold Out | Mid October - January |
| NOTE: Amaryllis Bulbs, Hosta Roots, Lily Bulbs, Papaver Roots, Paperwhite Bulbs, Peony Roots & Siberian Iris Roots ship to ALL ZONES beginning in October. | |
We try our utmost to maintain reliable inventory of all products, and are very proud of our record in doing so. However, as we are a company engaged in what Mother Nature provides, we do sometimes experience shortages and crop failures beyond our control. If, for any reason, we are required to backorder any portion of your order, rest assured we will keep you apprised of updated shipping information and/or any other options that may satisfy your needs and wishes.
Product Description
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!
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Fast Facts
Name: Cosmos Seeds - Radiance Botanical Name: Cosmos bipinnatus Life Cycle: Annual Light Requirement: Full Sun Planting Season: Spring Plant Type: 2-4-inch Saucer-Shaped Daisy-like Blooms, Fern-Like Pinnatisect Leaf Shape Features: Open Pollinated, Attracts Pollinators, Easy to Grow & Maintain, Fast Growing, Poor Soil Tolerant, Extended Bloom Time, Cut Flower Garden Color: Pink Blooms: Summer, Late Summer, Early Fall, Fall Days to Maturity: 60-90 Days Plant Height: 44-60 inches Plant Spacing: 9-12 inches Planting Depth: 1/4 inch Sowing Method: Direct Sow Cold Stratification: No Seeds per Packet: 900 mg Seeds per Pound: 68, 000 Hardiness Zones: 2, 3, 4, 5, 6, 7, 8, 9, 10 Ships: Year Round -
Planting Instructions
How to Plant & Grow Cosmos Flowers from Seeds
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!
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. 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.
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.
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Planting Video
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Seed Coverage
Amount Recommended Coverage Packet Up to 20 Sq. Ft Ounce Package Up to 100 Sq. Ft 1/4 Pound Package Up to 450 Sq. Ft 1 Pound Sack Up to 1,800 Sq. Ft 5 Pound Sack Up to 9,000 Sq. Ft
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Cosmos Seeds - Radiance Cosmos bipinnatus
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