Purplestem Aster
Symphyotrichum puniceum
Also known as: Shining Aster
- Native to:
- Canada, Labrador, Prince Edward I., United States
Shaun Pogacnik (www.inaturalist.org)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Symphyotrichum
- Species:
- Symphyotrichum puniceum
- USDA Symbol:
- SYPU
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb , Subshrub
- Height:
- 250 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- aug,sep,oct,nov
- Bloom Colors:
- purple, lavender, blue, pink
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Keystone Species Ranking
- Caterpillar Keystone:
- ★★★★☆ Butterfly & moth species supported by this genus (NWF)
- Pollen Specialist Bee Keystone:
- ★★★★☆ Native pollen specialist bee species supported by this genus (NWF)
Host Plant for Caterpillars
Arcigera Flower Moth (Schinia arcigera), Asymmetrura impositella, Impecunious Borer Moth (Papaipema impecuniosa), Lioptilodes parvus, Northern Flower Moth (Schinia septentrionalis), orange oakleaf (Charidryas nycteis), Pearl Crescent (Phyciodes tharos)
Reported Fauna Sightings
Bees: Common eastern (Bombus impatiens)
Garden & Ecology Notes
- Wildlife Value:
- bees, butterflies, birds
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts from rhizomes following fire; tolerates periodic burns in wetland margins.
Soil Requirements
- Soil Type:
- moist, rich, loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- commonly found in wetlands and along streams
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds require light for germination; surface sow and do not cover.
The above propagation data sourced from Claude AI
Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).
Source: Claude AI
ORGHPS Germination Guide: Sow @ 4C for 3 weeks, then place @ 20C.