How to Grow Decor Aster
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Decor Aster
Symphyotrichum novi-belgii 'Decor'
flowerDecor Aster is a compact, bushy cultivar of the New York Aster that produces abundant small, daisy-like flowers in shades of pink, purple, or white. This late-season bloomer is prized for fall color and makes an excellent cut flower and garden border plant. It typically reaches 12-24 inches in height with fine, delicate foliage.
When should you plant Decor Aster in your zone?
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Example Decor Aster timeline · Pittsburgh, PA (Zone 6b)
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Plant Decor Aster
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Decor Aster blooms
Around Jul 16≈ 90 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Decor Aster dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 4-8, hardy to zone 3
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Seedling
2-3 weeksTiny seedlings with cotyledons and first true leaves emerge
Keep soil moist, provide bright indirect light, thin to strongest seedlings after germination
Vegetative
4-6 weeksPlant develops bushy growth with multiple stems and fine, narrow foliage
Pinch back growing tips when 4-6 inches tall to promote bushiness, fertilize every 2-3 weeks with balanced fertilizer, keep consistently watered
Budding
3-4 weeksFlower buds form at stem tips in late summer/early fall, plant continues to fill out
Reduce nitrogen fertilizer to encourage flowering, maintain steady moisture, stake if needed for taller varieties
Flowering
6-8 weeksAbundant small daisy-like flowers open in pink, purple, or white, covering much of the foliage
Deadhead spent flowers to extend bloom, water only when soil surface is dry, reduce fertilizer
Post-Bloom
Ongoing through winterFlowers fade and plant begins to senesce, seeds develop in the center disk
Allow some flowers to go to seed for wildlife and self-seeding, cut back after hard frost, divide established clumps every 2-3 years
Common Pests
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Improve air circulation, water at base only, apply sulfur or neem oil spray if needed, remove affected foliage
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Hand-pick early morning, use pheromone traps away from plants, apply neem oil, encourage beneficial insects
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Increase humidity and air circulation, spray with strong water, apply insecticidal soap or neem oil
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Spray with water, use insecticidal soap, encourage ladybugs and lacewings
Uses
Edible Flowers
CulinaryAster petals are edible with a slightly bitter taste and can be used to garnish salads and desserts. They add color and a delicate floral note to culinary presentations. [source]
Cut Flowers & Arrangements
HouseholdDecor Aster is highly valued as a cut flower for autumn bouquets, arrangements, and dried flower crafts. Its abundant blooms and long vase life make it ideal for floral design. [source]
Traditional Herbal Use
MedicinalAsters have been used in traditional medicine, particularly in Asian cultures, for respiratory support and to reduce inflammation. Modern herbalists use aster preparations for general wellness. [source]
Pollinator Support
WildlifeAsters are essential late-season nectar and pollen sources for bees, butterflies, and other pollinators preparing for winter. The abundant flowers provide critical fall resources. [source]
Dried Flowers
CraftDecor Aster flowers dry beautifully and maintain their color well, making them perfect for dried arrangements, wreaths, and craft projects. Hang-dry by suspending upside-down in a warm, dry location. [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 flowers in early morning when buds just open for longest vase life (7-10 days). Cut stems at an angle, strip lower foliage, and immediately place in cool water. For garden display, allow some flowers to remain for late-season color and wildlife benefit. Dead-head regularly to extend bloom period.
Fun Facts
- 🌱 The name 'aster' comes from the Greek word for 'star,' referring to the star-shaped flower clusters.
- 🌱 Decor Aster blooms in fall when many other plants are fading, earning it the nickname 'frost flower' in some regions—though it blooms well before the first frost.
- 🌱 Asters are believed to have been brought to Europe by Chinese monks in the 17th century and became extremely popular in Victorian gardens as cut flowers.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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