Purple Dome New England Aster
Symphyotrichum novae-angliae 'Purple Dome'
Essentials
At a Glance
Plant Type
Perennial
Height
18 inches
Width
24 inches
Light
Full Sun
Zones
4, 5, 6, 7, 8
Water
Medium
Humidity
Average
Lifespan
Perennial
Native To
Eastern North America
Toxicity
Non-toxic
The Story
Plant Bio
New England Asters are robust, upright, native perennials that produce a profusion of daisy-like flowers in late summer and fall. They are a keystone species for late-season pollinators. 'Purple Dome' is a compact, dwarf cultivar that forms a tight, dome-like mound, reaching only about 18 inches tall. It is covered in vibrant, royal purple flowers in early fall and is highly resistant to the powdery mildew that can plague taller varieties.
Bloom Period:
Uses & Benefits:
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Planting
How to Grow
- Select a site in full sun with good air circulation.
- Asters are adaptable to most soils but prefer average moisture.
- Dig a hole slightly larger than the pot.
- Place the plant in the hole so the crown is level with the soil.
- Backfill, firm the soil, and water in well.
- Mulch to conserve moisture and suppress weeds.
Pro Tip
Pinching back the stems by half in early June creates a denser, sturdier plant with even more flowers.
Keep It Thriving
Care Guide
Do
- Provide full sun for the best flowering and sturdiest stems.
- Divide every few years to keep the plant vigorous and control its spread.
- Leave the seed heads for winter interest and for birds.
- Pinch back in early summer for a more compact, floriferous plant.
Don't
- Don't plant in deep shade, which leads to weak stems and poor flowering.
- Don't use overhead watering, which can encourage mildew.
- Don't over-fertilize, which can cause floppy growth.
- Don't let plants get too crowded; good air circulation prevents disease.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Pinch | ||||||||||||
| Plant |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Purple Dome New England Aster questions
What zones can Purple Dome New England Aster grow in?
Purple Dome New England Aster is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Purple Dome New England Aster deer resistant?
Yes — Purple Dome New England Aster is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Purple Dome New England Aster bloom?
Purple Dome New England Aster typically blooms in early fall through mid-fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Purple Dome New England Aster need full sun?
Purple Dome New England Aster does best in full sun (6+ hours).
More Symphyotrichum to compare
New England Aster Harringtons Pink
Symphyotrichum novae-angliae 'Harringtons Pink'
Eastern Silver Aster
Symphyotrichum concolor
New Mexico Aster My Antonia
Symphyotrichum fendleri 'My Antonia'
New England Aster
Symphyotrichum novae-angliae '05-196-10'
Fanny aster
Symphyotrichum oblongifolium 'Fanny'
Snow Flurry Heath Aster
Symphyotrichum ericoides 'Snow Flurry'
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Grow Purple Dome New England Aster with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
