Asters (Aster spp. / Symphyotrichum spp.)

Asters are beloved late-season bloomers that bring vibrant color to the garden when most other flowers begin to fade. With daisy-like blooms in shades of purple, pink, blue, and white—often with bright yellow centers—they are a magnet for pollinators, especially butterflies and bees preparing for migration. Asters come in a variety of sizes and growth habits, from compact mounds to tall, upright forms. They’re ideal for borders, native gardens, and naturalized areas.

Category

Sun Needs:

  • Full sun preferred (6+ hours of direct sunlight)
  • Can tolerate partial shade, especially in hotter climates

Bloom Time:

  • Late summer to fall (typically August through October)
Size:

Height: Varies by variety: 1 to 6 feet tall
Width: 1 to 3 feet spread

Attributes:
  • Starry, daisy-like flowers in late season
  • Attracts pollinators, especially butterflies and bees
  • Great for extending color into fall
  • Excellent cut flowers
  • Tolerates a range of soils; prefers well-drained soil
  • Low-maintenance and deer-resistant
  • Native varieties support local ecosystems
  • Can be divided every few years to prevent overcrowding
  • Some varieties may need staking if grown tall
Good Companion Plants:
  • Goldenrod (Solidago)
  • Black-eyed Susan (Rudbeckia)
  • Coneflower (Echinacea)
  • Ornamental grasses (e.g., Switchgrass, Little Bluestem)
  • Sedum (Autumn Joy)
  • Joe Pye Weed (Eutrochium)
  • Russian Sage (Perovskia)
  • Bee Balm (Monarda)
  • Blanket Flower (Gaillardia)
  • Toad Lily (Tricyrtis)

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