Powder Puff Aster (Callistephus chinensis) is an easy-to-grow heirloom annual that produces large, double blooms in shades of purple, rose, pink, violet, and white. Blooming from mid-summer through early fall, these vibrant flowers add color to the garden when many other annuals have faded. With extra-long stems and lasting blooms, Powder Puff Asters are perfect for ornamental gardening and make excellent cut flowers.
Despite being a member of the Aster family, Powder Puff Aster more closely resembles a chrysanthemum. This unique characteristic has made it the only member of the Callistephus genus, setting it apart from other asters. Originating in China, China Asters are widely grown around the world for commercial use in the cut flower industry. The name "aster" comes from the ancient Greek word for "star," a reference to the flower's bright and star-shaped blooms.
Perfect for beds, borders, and pollinator gardens, Powder Puff Asters thrive in full sun and well-drained soil. These fall-blooming beauties are a fantastic choice for adding late-season color to your garden.
SCROLL DOWN FOR DETAILED GROWING INFO *
All Nimble NiteCap Seeds are:
• Heirloom
• Organic
• Non-GMO
• Open Pollinated
• Untreated
• US Grown
• growing instructions included
• Regular testing is conducted to uphold the highest germination standards, all the while employing appropriate seed storage techniques.
Sustainable Packaging & Shipping:
• NimbleNitecap seeds are packed in eco-friendly, compostable seed packets. Seed packets are printed in house with vegetable-based inks on biodegradable, recycled materials. (Small plastic bags are infrequently used to prevent the loss of very small seeds.)
• All orders are carefully packed and shipped with tracking via USPS First Class (or Priority, if selected) in padded ECOENCLOSE recycled and reusable mailers, or recycled boxes to protect your items in transit.
Most orders ship out the same or next business day! Please note that this time may be extended during peak season.
• FREE SHIPPING on all orders of $35 or more. Flat Rate shipping no matter how many packets you order.
* DIRECTIONS *
Common Names: Powder Puff Aster, China Aster
Latin Name: Callistephus chinensis
Type: Annual
Life Cycle: Annual
USDA Zones: 2 - 11
Stratification: Not required
Germination Ease: Moderate to challenging
Sunlight: Full Sun to Partial Shade
Moisture: Prefers consistently moist, well-drained soil
Soil: Rich, well-drained soil with a pH between 6.0 and 7.5
Height: 18-30 inches
Spread: 12-18 inches
Color: Mix of purple, deep rose, pink, violet, and white
Bloom Season: Mid-summer to fall
Companion Plants: Good companion for tomatoes, beans, and other vegetables needing pollination support. Attracts beneficial insects.
Climate Adaptability: Adaptable to a wide range of climates within USDA zones 2-11
~ Sowing ~
When to Start Inside: Start seeds indoors 6-8 weeks before the last expected frost date. This helps ensure a good start, especially in cooler climates.
When to Start Outside: Direct sow seeds in the garden after the last frost when the soil has warmed.
Sowing Instructions: Sow seeds 1/8 inch deep in well-drained soil. Lightly press the seeds into the soil but do not cover them fully as they require light to germinate.
Planting Depth: Sow seeds 1/8 inch deep.
Watering: Keep the soil consistently moist but not waterlogged during germination. Once established, water regularly to maintain even moisture, but avoid overwatering.
Light and Temperature: Powder Puff Asters prefer full sun but can tolerate partial shade, especially in warmer climates. Ideal temperatures for germination are between 65-70°F (18-21°C).
Germination: Seeds typically germinate in 7-14 days under optimal conditions. Germination can be uneven, so patience is key.
~ Transplanting Seedlings Outdoors ~
Timing: Transplant seedlings outdoors after the risk of frost has passed and when they have developed at least two sets of true leaves.
Location: Choose a sunny location with well-drained soil. Powder Puff Asters perform best in rich soil with good drainage.
Spacing: Space plants 12-18 inches apart to allow for adequate air circulation and growth.
Transplanting: Handle seedlings carefully to avoid disturbing their roots. Water well after transplanting to help establish the plants.
~ Growing ~
Watering: Water regularly to keep the soil evenly moist, particularly during dry periods. Consistent watering helps prevent stress and encourages healthy growth.
Fertilizing: Apply a balanced fertilizer or compost at planting time. A light side-dressing of compost or fertilizer can be applied as the plants begin to flower to support prolonged blooming.
Pest and Disease Management: Powder Puff Asters can be susceptible to fungal diseases, such as powdery mildew and rust, especially in humid conditions. Ensure good air circulation around the plants, avoid overhead watering, and consider using a fungicide if necessary. Monitor for pests like aphids and spider mites, and treat them promptly with organic controls if found.
Maintenance: Deadhead spent flowers regularly to encourage continued blooming and maintain a tidy appearance in the garden.
~ Harvesting ~
When to Harvest: Harvest flowers when they are fully open for the best color and vase life.
How to Harvest: Use sharp scissors or garden shears to cut the stems at the desired length, ideally in the morning when the plants are fully hydrated.
Drying and Storing: Powder Puff Asters are best used fresh as cut flowers. For dried arrangements, hang stems upside down in a cool, dark, and dry place until fully dried.
~ Seed Saving ~
Allow some flowers to go to seed. Once the seed heads have dried on the plant, collect the seeds and store them in a cool, dry place for future planting.
~ Additional Information ~
Forage for Pollinators: Powder Puff Asters attract bees, butterflies, and other beneficial pollinators.
Origin: Native to China, widely cultivated for ornamental and commercial use in many countries.
Nomenclature: The genus name "Callistephus" comes from the Greek words "kallos" meaning beauty and "stephos" meaning crown, referencing the flower’s attractive, crown-like appearance.
History: Powder Puff Asters have been a staple in gardens for their vibrant colors and ease of growth. They are a favorite in the cut flower industry due to their long-lasting blooms and versatility in floral arrangements.
Climate Adaptability: Powder Puff Asters are adaptable to a wide range of climates and are especially valued for their ability to provide color in the late growing season.
