Dragon Aster enhances gardens with vibrant displays. Its abundant, daisy-like flowers bring color when other plants fade. Favored for its ornamental appeal.
Understanding Dragon Aster
Dragon Aster (Aster tataricus ‘Dragon’ or Symphyotrichum ‘Yodragon’) is a perennial with robust growth and late-season blooms. It reaches 16-24 inches tall (up to 30 inches) and spreads about 18 inches. Lance-like green leaves complement sky-blue or lavender-blue daisy-like flowers, often with yellow centers. Blooms appear late summer through fall, peaking September-October, providing color when other plants fade. Flowers have an ornamental shape, with petals curving inward and twisting into a claw-like appearance.
Cultivating Dragon Aster
Light Needs
Dragon Aster thrives in full sun for best blooms. Partial shade is tolerated, but shadier spots yield fewer flowers. Eight hours of sun is optimal.
Soil Requirements
Dragon Aster prefers well-drained, fertile soil. Ideal pH is 5.5-7.5 (slightly acidic to neutral). Organic matter (compost) improves structure, drainage, and fertility for clay or sandy soils.
Watering Practices
Consistent moisture is key during active growth and after planting. Water regularly to keep soil evenly moist; avoid waterlogging to prevent root rot. Watering at the base (not overhead) keeps foliage dry, reducing fungal disease risk.
Temperature and Hardiness
Dragon Aster is a perennial hardy in USDA Zones 4 to 9. Light frost is tolerated, extending fall blooms. Cooler night temperatures are preferred; temporary freezes are withstood.
Fertilization Guidelines
Asters are not heavy feeders. In fertile soil, a light compost application in early spring is sufficient. If soil nutrients are poor, apply a balanced, slow-release granular fertilizer (e.g., 10-10-10 or 5-10-5) in early spring. Stop fertilizing once flower buds appear or temperatures exceed 80°F to prevent root burn.
Ongoing Care for Dragon Aster
Pruning Techniques
Pruning encourages bushier growth and more blooms. Pinching stems in early summer (before July) promotes branching and a compact plant. Deadheading encourages more blooms longer. Cut the plant back to the ground after the first hard frost in late fall, or in early spring.
Managing Pests and Diseases
Dragon Aster is pest-resistant. However, it can get powdery mildew and rust in humid conditions or poor air circulation. To prevent fungal issues, ensure proper spacing and water at the base for dry foliage. Promptly removing affected leaves limits disease spread.
Winter Preparation
For winter, soak the plant thoroughly before the first hard freeze. Once frost kills foliage, cut stems to the ground. Mulch over the crown protects roots during winter.
Propagating Dragon Aster
Propagate Dragon Aster by division. Dig up the mature plant (every 3-4 years) and divide the root clump into smaller sections with a sharp spade or knife. Each new section needs healthy roots and several stems. Divide in early spring (as new growth emerges) or fall. Replant immediately at the original depth. Stem cuttings are another option: take non-flowering shoots in early summer and root in a well-draining medium.
Benefits of Growing Dragon Aster
Dragon Aster offers several benefits. Its late-season bloom provides garden color. Vibrant, daisy-like flowers attract pollinators (bees, butterflies), making it an excellent pollinator garden addition. It is also a suitable cut flower, with strong, upright stems for arrangements.