Image for Great Northern Aster

Great Northern Aster

Scientific name

Canadanthus modestus


Giant Mountain Aster is a wildflower species that can grow up to 1 m in height. This plant may also be known by the common names: Great Northern Aster or Modest Aster. The leaves are alternately arranged, lance to elliptic shaped, green coloured, have pointed tips, have entire margins possibly with occasional tooth, and are covered in long hairs. The flowers are purple coloured with white to pale yellow centers, have 20-40 petals, appear at the top of branching stems, and bloom between June and August. The flowers are beneficial to pollinator species, like bees and butterflies.

Planting conditions

Giant Mountain Aster grows best in normal to moist conditions with full or partial sun exposure. It prefers a well-drained, loam soil type. This wildflower can be naturally found in moist forests, wet fields, swamps, marshes, and along stream or lake shorelines.


  • Plant height:
    • Max 1.5m
    • Max 2m
    • Max 3m
    • Any
  • Moisture level:
    • Normal
    • Moist
  • Light conditions:
    • Full sun
    • Partial sun
  • Soil type:
    • Loamy
  • pH:
    • Normal
  • Depth:
    • Wildflower
  • Eco Zone:
    • 4a
    • 4b
    • 5a
    • 5b
    • 6a
    • 6b
    • 7a
    • 7b
  • Plant type:
    • Wildflower
  • Height:
    • 1 m
  • Spread:
    • 1 m