Cosmos Flower Seeds Packet

$4.95
By Chive Ceramics Studio

Cosmos flowers (Cosmos spp.) are an easy-to-grow, low-maintenance favorites 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 minimal effort, these flowers will self-seed and return year after year, creating a continuous floral display. 

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
Satisfaction Guarantee

We stand by the quality of our flower seed packets! With high germination rates and vibrant blooms, your garden is sure to flourish. If you're not completely satisfied, we’ll replace or refund—guaranteed!
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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.

Vac Seal for 10 Years

Our vacuum-sealed seeds stay fresher, longer—locking in life so your garden thrives on cue!

High Rate Germination

Our seeds don’t just sprout—they overachieve! With a high germination rate, success is guaranteed.

Pretty Packets

Our seed packets are so stunning, you’ll want to frame them—planting the seeds is a bonus.

How to Plant Cosmos from Seed

Preparing for Sowing

Cosmos plants thrive in dry, arid soil and can be negatively affected by excessive moisture, which may lead to disease. It is beneficial to amend the soil with compost, but it's important to avoid fertilizers with high nitrogen content, as these can promote foliage growth at the expense of flower production.

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.

Preparing for Sowing

Cosmos plants thrive in dry, arid soil and can be negatively affected by excessive moisture, which may lead to disease. It is beneficial to amend the soil with compost, but it's important to avoid fertilizers with high nitrogen content, as these can promote foliage growth at the expense of flower production.

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!

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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.

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