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How to Grow China Aster Ostrich Plume

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China Aster Ostrich Plume

Callistephus chinensis 'Ostrich Plume'

flower

China Aster Ostrich Plume is a striking ornamental annual flower with distinctive, fully double blooms featuring long, feathery petals that resemble ostrich feathers. The plants grow 24-30 inches tall and produce vibrant flowers in shades of pink, purple, red, white, and blue that are excellent for cutting. These dramatic blooms add texture and elegance to gardens and floral arrangements.

Looking for a specific variety?

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When should you plant China Aster Ostrich Plume in your zone?

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Example China Aster Ostrich Plume timeline · Pittsburgh, PA (Zone 6b)

  1. Plant China Aster Ostrich Plume

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First China Aster Ostrich Plume blooms

    Around Jun 26

    ≈ 70 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact China Aster Ostrich Plume dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily for best flowering; tolerates light afternoon shade in hot climates
💧
Water: Keep soil consistently moist but not waterlogged. Water at soil level to avoid wetting foliage. Provide 1-1.5 inches weekly; increase during hot, dry periods. Avoid overhead watering to prevent fungal diseases.
📏
Spacing: 12 inches
📅
Days to maturity: 70-90 days from seed to flowering
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Planting depth: Barely cover seeds (1/8 inch); seeds need light to germinate

Soil

Type: Well-draining loamy soil with good organic matter
pH: 6.0-7.0
Amendments:
compost aged manure perlite for drainage peat moss

Growing Zones

Find your zone →

Thrives in zones 2-11; grown as cool-season annual in hotter regions

2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a

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Growth Stages

1

Seedling

7-10 days

Tiny seedlings emerge with two cotyledons; true leaves develop slowly. Plants are delicate and vulnerable.

Maintain consistent moisture and moderate light (not full intensity). Provide good air circulation. Keep soil at 65-70°F. Thin seedlings to proper spacing once true leaves appear.

2

Vegetative Growth

4-6 weeks

Bushy plants develop multiple stems and compound leaves. Height increases steadily. Plants are becoming sturdier.

Pinch back growing tips when plants are 4-6 inches tall to encourage branching and bushier growth. Maintain consistent watering and feeding every 2-3 weeks with balanced fertilizer. Ensure good air circulation.

3

Budding

2-3 weeks

Terminal flower buds form at branch tips. Plants reach near full height (24-30 inches). Buds are initially tight and small.

Support tall varieties with stakes or cages as needed. Continue regular watering and switch to higher phosphorus fertilizer to promote flowering. Remove any yellowing lower leaves.

4

Flowering

4-8 weeks

Large, fully double blooms with characteristic feathery petals open progressively. Multiple flowers per plant bloom in succession over 4-8 weeks.

Deadhead spent flowers regularly to encourage continued blooming. Water consistently and maintain moderate fertilizing (reduce nitrogen). Cut flowers early morning for longest vase life. Watch closely for pests and diseases.

5

Decline

Variable, until frost or heat stress

As temperatures drop in fall or heat rises in summer, flowering slows and stops. Plants become less vigorous.

Collect seeds from fading flowers if desired. Remove plants before severe frost or extreme heat. Deadhead until final frost to extend season slightly.

Companion Planting

Plan your garden →

Plant with:

salvia cosmos cleome sunflowers zinnias marigolds bachelor's buttons statice sweet alyssum

Avoid planting near:

fennel tomatoes potatoes brassicas (in same soil as previous asters due to disease buildup)

Common Pests

  • Remove infected plants immediately. Use reflective mulches to confuse insects. Spray with insecticidal soap or neem oil. Remove weeds that harbor vectors.

  • Hand-pick early morning or dusk. Use pheromone traps away from plants. Apply neem oil or spinosad. Consider row covers on young plants.

  • Increase humidity with regular misting. Spray with water to dislodge. Use miticide or insecticidal soap if severe. Ensure good air circulation.

  • Choose resistant varieties. Avoid planting asters in same location yearly. Remove infected plants. Sterilize tools. Improve drainage and air circulation.

  • Ensure excellent air circulation. Water only at soil level. Apply sulfur dust or fungicidal spray at first sign. Remove heavily infected leaves.

  • Improve air circulation. Avoid overhead watering. Remove dead flowers promptly. Space plants appropriately. Fungicide spray if conditions are humid.

Uses

🍳

Edible Flowers

Culinary

China aster petals are technically edible and can garnish salads or desserts, though they are primarily grown for ornamental purposes. Use petals from pesticide-free plants only. [source]

🏠

Cut Flowers & Arrangements

Household

The Ostrich Plume variety is prized for floral arrangements and cutting gardens due to its dramatic double blooms and sturdy stems. Flowers last 7-10 days in water. [source]

🎨

Dried Flowers

Craft

Fully opened blooms can be dried for dried flower arrangements and crafts. Hang-dry in bundles in cool, dark, well-ventilated spaces. [source]

🦋

Pollinator Support

Wildlife

Despite being double-flowered (which reduces nectar/pollen access), single aster forms and partially open blooms still attract bees and butterflies. Beneficial insects appreciate the late-season blooms. [source]

💊

Traditional Herbalism

Medicinal

In traditional Chinese medicine, Callistephus chinensis has been used in folk remedies, though modern evidence is limited. The plant should not be consumed without guidance from practitioners. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Cut stems in early morning when fully hydrated for maximum vase life (7-10 days). Cut stems at 45-degree angle just above a leaf node. Remove lower foliage below water line. Change water every 2-3 days and re-cut stems. Continuous deadheading of spent flowers in the garden encourages more blooms.

Fun Facts

  • 🌱 The Ostrich Plume variety was developed in the late 1800s and named for its resemblance to luxurious ostrich feathers, which were fashionable in that era.
  • 🌱 Despite being called 'China Aster,' this annual flower is not a true aster (Symphyotrichum) but rather belongs to the genus Callistephus; true asters are perennials.
  • 🌱 China asters are susceptible to aster yellows, a serious viral disease spread by leafhoppers, which was one of the first plant diseases scientifically linked to an insect vector.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Annual Deadhead Full Sun pH Pinch Back True Leaves
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