Oldie, but goldie fall aster with sky blue flowers and manageable size in September/October.
Possibly better for northern, northeastern, coastal areas or areas with a bit lower summer humidity or cooler nights (we haven't tested it in our hot and humid south central Indiana yet).
Selected in the 30's-40's by Lady Thornely (Devizes, SW of Britain), awarded by RHS (Royal Horticultural Society) with Award of Garden Merit in 1993.
1.5-2' tall x 2-2.5' wide clumps, blue flowers (1'+ in diameter).
This aster is probably cross of Aster novi-belgii and Aster cordifolius, but often is mentioned as Aster cordifolius 'Little Carlow'.
Full sun, average, loamy, drained clayish soils, with average (medium) moisture.
Hardy in zones 4 to 8.
Black walnut tolerant, deer and rabbits may nibble on it. Attracts butterflies and some native bees.
Best for the front of sunny flower bed, combine with Amsonia, Echinacea, Hibiscus, Hydrangea, Iris, Nepeta, Peaonia, Rudbeckia, and many common perennials and medium to tall grasses.
This aster is used and can be seen for example in Lurie Garden in Chicago.
Pot size : square 3.5" x 5" deep pot
Picture copyright : Glen Bowman, Flickr
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I bought this and several other plants from here and am very happy with them! They arrived fast and in healthy perfect condition. THANK YOU