Cosmos Flower Seeds Packet

$2.35

2025 Seed Prices

  • Order 1-95 assorted packets for $2.35 each
  • Order 96-499 assorted packets for $1.85 each
  • Order 500 or more assorted packets for $1.65 each

"Cosmos flowers (Cosmos spp.) are a favorite among gardeners due to their delicate, daisy-like blooms, feathery foliage, and ability to attract butterflies and bees. These annuals are incredibly easy to grow, making them ideal for beginner and experienced gardeners alike. Their long blooming period, from early summer until frost, provides a vibrant display of color in flower beds, borders, and wildflower gardens.
With their adaptability to various growing conditions, cosmos flowers thrive in gardens and containers, requiring little maintenance. Cosmos flowers are an easy-to-grow, low-maintenance choice for home gardens, offering long-lasting blooms, pollinator attraction, and vibrant color. With minimal effort, these flowers will self-seed and return year after year, creating a continuous floral display."

SKU: SECOSM
Barcode: 843458152743

Product Detail

Order in multiples of: 12

  • Year Designed: 2024
Quick Seed Overview
  • Plant Type: Annual
  • Genus: Cosmos
  • Species: Bipinnatus
  • Plant Height/Width: 36-48"high, 12-14" spread
  • Season: Blooms summer to fall
  • Exposure: Sun
  • Difficulty: Easy
  • Attributes: Attract Pollinators

Why Shido Seeds Are the Best

Our flower and vegetable seeds are beautifully packaged little packets of magic. Guaranteed to turn your garden into the envy of the neighborhood. Get your hands dirty and let nature simply do its thing.

How to Plant Cosmos from Seed

When to Plant Seeds

  • Outdoors: Sow seeds after the last frost date when the soil has warmed.
  • Indoors: Start seeds 4-6 weeks before the last expected frost for earlier blooms.

Seed Preparation

  • No special seed treatment is needed.
  • For faster germination, soak seeds in water for a few hours before planting.

Sowing Seeds Outdoors

  1. Choose a well-drained, sunny location.
  2. Loosen the soil and remove any weeds.
  3. Scatter seeds directly on the soil surface and press them in gently.
  4. Lightly cover with a thin layer of soil (about ¼ inch deep).
  5. Keep the soil moist but not waterlogged.
  6. Germination occurs within 7-21 days.
  7. Thin seedlings to 12 inches apart once they develop true leaves.

Starting Seeds Indoors

  1. Fill seed trays with moist, well-draining seed-starting mix.
  2. Plant seeds ¼ inch deep and cover lightly with soil.
  3. Maintain temperatures of 65-75°F (18-24°C).
  4. Water gently and place trays in a bright location.
  5. Transplant seedlings outdoors after the last frost, spacing them 12-18 inches apart.

Pro Tip

Deadhead spent blooms to keep them flowering all season, or let some go to seed for self-sown blooms next year.

Bonus: They’re drought-tolerant and attract butterflies, bees, and hummingbirds!

Getting to know your Cosmos

Cosmos flowers are a delightful addition to any garden, as they are fast-growing annuals that can reach heights of 1 to 6 feet, depending on the variety. Their slender stems and delicate, feathery foliage support an abundance of daisy-like blooms that appear from summer until the first frost. These blooms boast a central yellow disk and radiating petals that come in various colors, providing vibrant color throughout the season.Cosmos are not only beautiful but also beneficial to the environment. They attract bees, butterflies, and other pollinators, making them an excellent choice for those looking to create a wildlife-friendly garden.

What it's used for

1. Ornamental Gardening:

  • Ideal for cottage gardens, mixed borders, and container gardens.
  • Works well in wildflower meadows and informal landscapes.

2. Pollinator Attraction & Biodiversity:

  • A great addition to pollinator gardens, supporting bees and butterflies.
  • Helps increase biodiversity by attracting beneficial insects.

3. Cut Flowers & Floral Arrangements:

  • Cosmos flowers have a long vase life, making them ideal for cut flower arrangements.

4. Low-Maintenance Landscaping:

  • Requires minimal watering and care, making them perfect for xeriscaping and dry gardens.
  • Suitable for beginner gardeners due to their resilience and adaptability.
Growth Requirements

Light:

  • Thrive in full sun (6-8 hours per day).
  • Can tolerate partial shade, but flowering may be reduced.

Soil:

  • Prefer well-drained, moderately fertile soil.
  • Adaptable to poor soils, but excessive fertilization may lead to more foliage and fewer flowers.
  • pH range: 6.0-7.0 (slightly acidic to neutral soils).

Watering:

  • Drought-tolerant once established.
  • Requires moderate watering, with soil kept lightly moist but not soggy.

Temperature & Climate:

  • Thrives in warm temperatures between 65-85°F (18-29°C).
  • Hardy in USDA zones 2-11, grown as an annual in most climates.

Fertilization:

  • Avoid excessive nitrogen, as it promotes leafy growth instead of blooms.
  • A light application of a balanced, all-purpose fertilizer can encourage healthy growth.
Maintenance

Deadheading & Pruning:

  • Remove spent flowers to encourage continuous blooming.
  • If plants become leggy, trim back stems to promote bushier growth.

Support & Staking:

  • Tall varieties may require staking in windy areas.
  • Provide support for plants over 3 feet tall.

Disease & Pest Prevention:

  • Cosmos flowers are generally pest-resistant, but aphids and spider mites may appear.
  • Use neem oil or insecticidal soap if pests become problematic.
  • Ensure proper spacing to prevent fungal diseases in humid climates.
Pests and Diseases

Pests:

  • Aphids – Can be controlled with neem oil or strong water sprays.
  • Spider Mites – Increase humidity and use insecticidal soap if needed.

Diseases:

  • Powdery Mildew – Ensure good air circulation to prevent.
  • Root Rot – Avoid overwatering and plant in well-drained soil.

Growing Together with Shido

At Shido, everything we do starts with one goal: helping you have a truly successful growing experience. We know that planting seeds is just the beginning — your time, energy, and love for gardening are the real magic. That’s why we make sure the seeds you plant are fresh, full of life, and top-quality. When you choose Shido, you’re planting with confidence. We guarantee it.

Our mission is simple: bring you exceptional varieties of high-quality seeds at prices you’ll love, share detailed sowing and growing tips so you can thrive as a home gardener, and deliver the best customer service in the industry — with a smile.

Our Seed Safety Promise

We do not sell genetically modified seeds — ever. And we don’t use genetic engineering to breed new varieties. Instead, our skilled breeders use traditional, natural crossing methods to create hybrid seeds that are healthy, safe, and packed with potential.

Our Seed Quality Guarantee

At Shido, we believe great gardens start with great seeds — and that means quality comes first. Every seed lot we offer is ensure to generate top-notch germination because your garden deserves nothing less.

To keep our seeds at their peak, we run thorough pathology tests at trusted outside labs. When you open a Shido seed packet, you can trust it’s been nurtured, tested, and approved to give you strong, healthy plants from the very first sprout.

Types of Seeds We Offer

Hybrid Seeds (F1)

F1 hybrid seeds are the garden’s high achievers — created by crossing two specially chosen parent plants for superior vigor, uniformity, and performance. We use only traditional breeding methods to produce these powerhouse seeds.

Open-Pollinated & Heirloom Seeds

Our open-pollinated (OP) seeds naturally reproduce through wind, insects, water, or self-pollination. When grown in isolation, they produce true-to-type plants year after year.

Among our OP seeds are treasured heirloom varieties — old favorites that have been carefully passed down for generations. While OP plants can be less uniform than hybrids, we run our Open-Pollinated Project to select the most reliable, flavorful, and beautiful strains. Many are also available as certified organic seeds.

Non-GMO: What It Means and Why It Matters

GMO (Genetically Modified Organism) is created when scientists alter a plant’s DNA in a lab — often by inserting genes from completely unrelated species — to achieve certain traits, like pest resistance or herbicide tolerance. This is a far cry from natural plant breeding.

At Shido, we believe gardening should stay as close to nature as possible. All our seeds — whether hybrid, heirloom, organic, or open-pollinated — are Non-GMO. They’re bred using traditional methods that respect natural biodiversity, giving you safe, wholesome seeds that grow into plants just as nature intended.

When you plant Shido Non-GMO seeds, you’re choosing purity, sustainability, and peace of mind — along with a garden full of flavor, color, and beauty.

Vacuum-Sealed for Freshness — Good for 10 Years

Every Shido seed packet isvacuum-sealedto lock in freshness and protect your seeds from moisture, air, and pests. This careful packaging not only preserves their quality but also extends their shelf life dramatically. Stored properly in a cool, dry place, our seeds remain viable for up to10 years— so you can plant them now, next season, or even years down the road. Whether you’re planning a garden this spring or building a long-term seed stash, Shido seeds are ready when you are

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