perennial
New England aster 'Purple Dome'
Symphyotrichum novae-angliae 'Purple Dome'
Preview: plant data is awaiting horticulturist review. A professional horticulturist hasn't reviewed our plant table yet. Lists still follow fixed rules for zone, sun, pets, deer and invasive status.
Hardy in zones 4–8, New England aster 'Purple Dome' is a perennial. Expect 1.5–2 ft of height and 2–3 ft of spread; our lists space it 2 ft apart. It does best in full sun to part sun with average water, and it copes with wet soil. Expect purple flowers in September to October. In a FloraVista list it usually plays the filler role: a flowering plant that fills the middle or front of the bed. It is native to the Northeast, the Mid-Atlantic, the Midwest and the Great Plains. Deer may browse it when other food is short, and it is not listed as toxic to dogs or cats. Our rules leave it out of lists in Florida and the Gulf and the Desert Southwest, where summer heat, humidity or mild winters hold it back even inside its zone range.
Facts from our plant table
- Botanical name
- Symphyotrichum novae-angliae 'Purple Dome'
- Plant type
- Perennial, herbaceous
- Hardiness zones
- 4 to 8
- Sun
- Full sun (6+ hours); Part sun (4–6 hours)
- Water
- Medium; tolerates wet soil
- Soil
- Average to moist soil.
- Mature size
- 1.5–2 ft tall × 2–3 ft wide
- Spacing
- 2 ft apart (centre to centre)
- Growth rate
- Medium
- Bloom
- Sep–Oct · purple
- Roles in a bed
- Filler
- Styles
- natural, cottage
- Deer resistance
- Medium: browsed when deer are hungry
- Pets
- Not listed as toxic to dogs or cats. Not on the ASPCA toxic list; no known toxic compounds.
- Native to
- Northeast, Mid-Atlantic, Midwest and Great Plains
- Pot size and price
- 1-gallon pot, typically $10–$18 (easy to find)
- Plant in
- Spring or Fall
- First-year watering
- Water deeply once or twice a week through the first growing season; keep soil evenly moist, not soggy.
- Pruning
- Cut down in late winter.
Sources: ASPCA Toxic and Non-Toxic Plant List (from general knowledge; not re-checked unless verification is web-checked); Missouri Botanical Garden Plant Finder and grower tags; State extension service guidance and USDA PLANTS distribution maps; Rutgers NJAES Landscape Plants Rated by Deer Resistance; Invasive Plant Atlas of the United States and state noxious weed lists; Typical 2026 US garden-centre and big-box retail listings (estimate). Not yet reviewed by a horticulturist.
Guides that include this plant
- Dog-safe plants for a full-sun bed in zone 4 (as a substitute)
- Dog-safe plants for a full-sun bed in zone 6 (as a substitute)
- Dog-safe plants for a full-sun bed in zone 7 (as a substitute)
- What to plant in a full-sun bed in zone 8 (as a substitute)
- Natural-style plants for a sunny bed in zone 4
- Natural-style plants for a sunny bed in zone 5 (as a substitute)
- Natural-style plants for a sunny bed in zone 7 (as a substitute)
- Prairie-style plants for a sunny bed in zone 5, Great Plains
Good companions
The plants our list engine most often puts in the same bed as New England aster 'Purple Dome', across the sun, zone, pet, deer and style combinations it fits.
- Red twig dogwood 'Arctic Fire'Cornus sericea 'Farrow'shrub · zones 3–7
- Switchgrass 'Shenandoah'Panicum virgatum 'Shenandoah'ornamental grass · zones 4–9
- Shrubby cinquefoil (potentilla) 'Goldfinger'Dasiphora fruticosa 'Goldfinger'shrub · zones 2–7
- Foxglove beardtongue 'Husker Red'Penstemon digitalis 'Husker Red'perennial · zones 3–8
- Weeping redbud 'Ruby Falls'Cercis canadensis 'Ruby Falls'small tree · zones 5–9
- Arrowwood viburnum 'Blue Muffin'Viburnum dentatum 'Christom'shrub · zones 3–8
If you can't find it
Substitutes our engine offers for New England aster 'Purple Dome': same role in the bed, passing the same rules. Some of them are flagged toxic to dogs or cats: check the pet note before you swap.
- Foxglove beardtongue 'Husker Red'Penstemon digitalis 'Husker Red'zones 3–8 · not flagged toxic to pets
- Aromatic aster 'October Skies'Symphyotrichum oblongifolium 'October Skies'zones 3–8 · not flagged toxic to pets
- Meadow sage 'May Night'Salvia nemorosa 'May Night'zones 4–8 · not flagged toxic to pets
- Black-eyed Susan 'Goldsturm'Rudbeckia fulgida var. sullivantii 'Goldsturm'zones 4–9 · flagged toxic to pets
How this page was made
This page was generated from this plant's record in FloraVista's plant table by fixed rules. The companions and substitutes come from the lists our rules engine composes. No named expert has reviewed this page.
Data status: the plant table is awaiting review by a horticulturist. Check each plant with a local nursery or extension office before you buy.
Sources
- Missouri Botanical Garden Plant Finder, state extension services and the USDA PLANTS database (zones, size, sun, water, bloom, native range)
- ASPCA toxic and non-toxic plant lists (dog and cat toxicity)
- Rutgers NJAES and regional extension deer-resistance ratings
- State noxious-weed and invasive-plant lists and the Invasive Plant Atlas of the US
- Typical US garden-centre listings (pot size and price band)
Generated . How FloraVista chooses plants