Toxic Plant Known to be toxic - Toxic to mammals if ingested.
Image of Symphyotrichum urophyllum
image of Flowering plant
Symphyotrichum urophyllum
Arrow-leaved aster
Aster urophylle

Obsolete Names

  • white arrow-leaved aster
No seeds available for this plant.

We are not accepting seeds for this plant at the moment.

Bloom colour: Blue Bloom period: August - October
Max Height: 3.0 feet
Max Width: 2.0 feet (spreads by rhizome)
Light condition:
Full sun More than 6 hours of direct sun a day
Part shade More than 2 or 3 hours but less than 6 hours of direct sun a day
Full shade Less than 2 or 3 hours of direct sun a day
Soil conditions:
Moisture medium Tolerates medium soil condition
Lifespan : Perennial
Gardener Experience:
beginner friendly Suitable for beginner gardeners
does not spread Does not spread uncontrollably
plant germinate easy Easy to germinate
Landscape uses:
rock garden Suitable for rock gardens
shoreline_rehab Suitable for shoreline rehabilitation
container suitable Suitable for container garden
school garden Suitable for school gardens
woodland garden Suitable for woodland gardens
foot traffic tolerance light Tolerates light foot traffic
Ecological Benefits:
Pollinator garden Supports pollinators
butterfly host Butterfly host
Tolerates:
juglone Tolerant Tolerates juglone conditions
transplantation Tolerant Tolerates transplantation

Plant Distribution

Native to Ottawa region: No

Distribution according to VASCAN

Distribution: Symphyotrichum urophyllum
Ephemeral Native Introduced Excluded Extirpated Doubtful Absent
View taxonomy on Canadensys

View on iNaturalist

Thrives in Ecozones

  • Ecozone-Boreal Plains
  • Ecozone-Boreal Shield
  • Ecozone-Boreal_Plains

Butterflies Supported by Symphyotrichum urophyllum

  • Leuconycta diphteroides (Green Leuconycta)
  • Phyciodes cocyta (Northern Crescent)

Bees Supported by Symphyotrichum urophyllum

  • Andrena aliciae
  • Andrena asteris
  • Andrena canadensis
  • Andrena chromotricha
  • Andrena hirticincta
  • Andrena nubecula
  • Andrena placata
  • Andrena simplex
  • Complexe Colletes americanus
  • Complexe Colletes compactus
  • Complexe Colletes simulans
  • Dianthidium simile
  • Melissodes agilis
  • Melissodes druriellus
  • Melissodes illatus
  • Melissodes subillatus
  • Melissodes trinodis
  • Protandrena andrenoides
  • Pseudopanurgus aestivalis

Complementary Plants Plants that grow in similar conditions, that bloom at the same time.

  • No complementary plants found.

Sowing Information

  • Sowing depth: Surface sow
  • Sow before February
  • Stratification duration: 60 days
  • Self-seeding

Harvesting Information

  • Harvesting indicator: Seeds have become fluffy and can be easily removed by shaking on gently pulling off from stem
  • Harvesting mean: Shake seed head in paper bag
  • Seed Viability Test: No test needed before donating
  • Packaging Measure: 1 rounded 1/4 teaspoon
  • Seed Storage: Air Dry in paper bag or open container, for a few days until crisp, shaking seeds to move them once in a while to prevent molding
  • On Cultivar: No, you can donate without knowing the source as there are only straight species