Symphyotrichum puniceum var. puniceum
Height: 3-5 ft
Spread: 2-3 ft
Bloom Time: September-October
Sunlight: Full Sun to Part Shade
Soil Moisture: Wet
Large 1 to 1½ inch flowers are light purple. Stems are often purplish also with clasping leaves. Purple-stemmed asters bloom at the time when Monarch butterflies are making their famous migration south and seem to be a particularly preferred nectar source for them.