20 per packet. Duchess Peony Dark Blue Aster is a stunning variety of China Aster (Calliste Phus chinensis), prized for its rich, deep blue-violet blooms and lush, peony-like flower heads. Here's a detailed overview of this elegant annual flower:
πΌ Duchess Peony Dark Blue Aster Overview
Botanical Name: Calliste Phus chinensis
Common Name: China Aster
Cultivar: Duchess Peony Dark Blue
Plant Type: Annual
Bloom Form: Fully double, peony-style blooms
Color: Deep blue to violet-purple
Mature Height: 18β24 inches (45β60 cm)
Spread: 12β18 inches (30β45 cm)
Bloom Time: Summer to early fall (mid-July to October depending on climate)
πΏ Growing Requirements
Hardiness Zone: Best in USDA zones 2β11 as an annual
Sun Exposure: Full sun to partial shade
Soil: Well-drained, fertile soil rich in organic matter
Watering: Moderate; keep evenly moist but not soggy
Spacing: 9β12 inches apart to allow good air circulation
π± Planting Tips
Start Indoors: 6β8 weeks before the last frost
Transplant: After danger of frost has passed
Direct Sow: Possible in warmer climates after last frost
Pinching: Optional but encourages bushier plants
Deadheading: Extends blooming period
πΈ Notable Features
Bloom Size: 3β5 inches across
Form: Resembles peonies or large pom-poms
Stem Strength: Excellent for cut flower arrangements
Pollinators: Attracts bees and butterflies
Disease Resistance: Moderate; avoid overhead watering to prevent powdery mildew or aster yellows
πΊ Uses
Cut Flower Gardens: A florist favorite for its long-lasting blooms
Borders & Beds: Provides bold, upright color
Containers: Great for large pots with proper drainage
Cottage Gardens: Ideal in mixed flower arrangements
Pollinator Gardens: Supports local bee populations
π§Ό Maintenance Tips
Rotate crops yearly to avoid soil-borne diseases
Water early in the day to let foliage dry
Remove infected plants promptly to prevent spread
Mulch to retain soil moisture and suppress weeds