Blue Cornflower Flower Seeds Packet

$4.95
By Chive Ceramics Studio

The Blue Cornflower (Centaurea cyanus), also known as Bachelor’s Button, is a charming and hardy annual flower known for its brilliant blue petals and delicate, ruffled appearance. They are a low-maintenance, resilient flower that adds striking blue hues to gardens and floral arrangements. Its ability to attract pollinators, resist drought, and self-seed makes it a favorite among gardeners.

Quick Seed Overview
  • Plant Type: Annual
  • Genus: Centaurea
  • Species: Cyranus
  • Plant Height/Width: 12–48 in. tall, 10–12 in. wide
  • Season: Bloom time spring summer
  • Exposure: Sun
  • Difficulty: Super Easy
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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 Asters from Seed

Preparing for Sowing

Blue Cornflower is easy to grow from seed, either by direct sowing outdoors or starting indoors. Choose which method works best for you before getting started.

When to Plant Seeds

  • Outdoors: Direct sow seeds in early spring, after the last frost, or in fall for early blooms the following season.
  • Indoors: Start seeds 4-6 weeks before the last frost for an earlier bloom period.

Seed Preparation

  • No special treatment is needed; Blue Cornflower seeds germinate easily.

Sowing Seeds Outdoors

  1. Choose a well-draining, sunny location.
  2. Loosen the soil and remove any weeds.
  3. Scatter seeds directly on the soil surface and lightly press them in.
  4. Water gently to keep the soil moist until germination.
  5. Expect seedlings to emerge within 7-14 days.
  6. Thin seedlings to 6-12 inches apart for best growth.

Starting Seeds Indoors

  1. Fill seed trays with moist, well-draining seed-starting mix.
  2. Lightly press seeds into the surface without burying them deeply.
  3. Keep trays at a temperature of 65-70°F.
  4. Provide bright indirect light or use grow lights.
  5. Transplant seedlings outdoors after the last frost, spacing them 6-12 inches apart.

Preparing for Sowing

Blue Cornflower is easy to grow from seed, either by direct sowing outdoors or starting indoors. Choose which method works best for you before getting started.

When to Plant Seeds

  • Outdoors: Direct sow seeds in early spring, after the last frost, or in fall for early blooms the following season.
  • Indoors: Start seeds 4-6 weeks before the last frost for an earlier bloom period.

Seed Preparation

  • No special treatment is needed; Blue Cornflower seeds germinate easily.

Sowing Seeds Outdoors

  1. Choose a well-draining, sunny location.
  2. Loosen the soil and remove any weeds.
  3. Scatter seeds directly on the soil surface and lightly press them in.
  4. Water gently to keep the soil moist until germination.
  5. Expect seedlings to emerge within 7-14 days.
  6. Thin seedlings to 6-12 inches apart for best growth.

Starting Seeds Indoors

  1. Fill seed trays with moist, well-draining seed-starting mix.
  2. Lightly press seeds into the surface without burying them deeply.
  3. Keep trays at a temperature of 65-70°F.
  4. Provide bright indirect light or use grow lights.
  5. Transplant seedlings outdoors after the last frost, spacing them 6-12 inches apart.

Pro Tip

Avoid overwatering—these hardy flowers prefer it dry! For a longer bloom season, deadhead spent flowers to encourage continuous flowering. Bonus: They’re edible and make a gorgeous garnish!

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Getting to know your Blue Cornflower

Blue cornflowers are annuals, meaning they complete their life cycle in one growing season. They typically grow 1 to 3 feet tall, forming slender, upright stems covered in fine hairs. The plants develop multiple branches, creating a bushy, full appearance. The flowers are intensely blue, although some varieties bloom in pink, white, or purple. lue Cornflowers bloom from late spring to early fall. They attract bees, butterflies, and other beneficial pollinators.

What it's used for

1. Ornamental Gardening:

  • Often grown in cottage gardens, wildflower meadows, and borders.
  • Excellent as a low-maintenance, drought-tolerant bedding plant.

2. Cut Flowers & Floral Arrangements:

  • Blue Cornflowers are commonly used in fresh and dried flower bouquets.
  • Their vivid blue petals provide a striking contrast in floral compositions.

3. Pollinator & Beneficial Insect Attraction:

  • The nectar-rich blooms help sustain bees, butterflies, and other pollinators.
  • Acts as a companion plant, attracting predatory insects that feed on garden pests.

4. Culinary & Medicinal Uses:

  • The petals are edible and often used to garnish salads, teas, and desserts.
  • In traditional herbal medicine, Blue Cornflowers were used for eye ailments and digestive issues.

5. Companion Planting:

  • Pairs well with poppies, calendulas, larkspurs, and other wildflowers.
  • Helps deter certain pests and attracts beneficial insects.
Growth Requirements

Light:

  • Prefers full sun (at least 6 hours of direct sunlight daily).
  • Can tolerate partial shade, but flowering may be less abundant.

Soil:

  • Thrives in well-draining, moderately fertile soil.
  • Prefers a neutral to slightly alkaline pH (6.5-7.5).
  • Can tolerate poor or sandy soils, making it ideal for xeriscaping.

Watering:

  • Blue Cornflowers require moderate watering.
  • Once established, they are drought-tolerant but benefit from occasional deep watering.

Temperature & Climate:

  • Hardy in USDA Zones 2-11.
  • Prefers cool to mild temperatures, making it an excellent spring or fall flower in warmer climates.

Fertilization:

  • Apply a light application of balanced fertilizer (10-10-10) at planting time.
  • Avoid excessive nitrogen, which can lead to lush foliage but fewer flowers.
Maintenance

Mulching:

  • Apply mulch around plants to retain moisture and suppress weeds.
  • Helps keep roots cool during hot weather.

Deadheading & Pruning:

  • Remove spent flowers to extend the blooming season.
  • If left to go to seed, they will readily self-seed for the next year.

Disease & Pest Prevention:

  • Ensure good air circulation to prevent fungal diseases.
  • Water at the base to avoid wetting leaves and reduce the risk of powdery mildew.
Pests and Diseases

Pests:

  • Aphids: Can cause leaf curling; treat with insecticidal soap.
  • Thrips: Can damage flower petals; use neem oil to control infestations.

Diseases:

  • Powdery Mildew: White, powdery coating on leaves; treat with fungicides.
  • Rust: Orange-brown fungal spots; remove affected leaves and improve airflow.

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