Flat-topped Aster, Parasol Whitetop, Umbellate Aster

Flat-topped Aster, Parasol Whitetop, Umbellate Aster

Symphyotrichum umbellatum

This upright perennial bears white flowers in summer fall.

  • White flowers are produced in summer fall, providing colour through the bloom season.
  • Upright clump, reaching 1.75 m at maturity; divide every three to four years to maintain vigour.
  • Best in full sun to partial shade to full shade with moist, average, wet soil.
Size
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Plant Characteristics

Sunlight
Full sun, Partial shade, Shade
Soil Moisture
Moist, Average, Wet
Hardiness Zone
3 – 3
Mature Height (meters)
1.0 – 1.75
Mature Spread (meters)
0.3 – 0.5
Growth Rate
Medium
Flower Colour
White
Foliage Colour
Green
Bloom Time
SummerFall
Habit
Upright
Deer Resistant
Pollinator Friendly
Attracts Birds
Ontario Native
Landscape Uses
Mass planting, Accent, Rain garden
Growing & Maintenance Tips
Grows best in full to partial sun, in wet to moist conditions. Soil should consist of plenty of organic material to hold moisture. Drought conditions will cause this aster to go into early dormancy. Plant height and width vary depending on location and soil moisture. Naturally found in highly fertile, low-lying areas along streams, ponds and woodland edges.
Notes
Native to Ontario The botanical name for Flat-topped Aster, Parasol Whitetop, Umbellate Aster has been updated from Aster umbellatus to Symphyotrichum umbellatum.

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