All About Asters

Spring hasn’t even started and I am already looking forward to fall. Why? Asters. They are hardy, long-blooming, and attract tons of pollinators. Planning ahead and planting asters now will ensure you have lots of color through October and even into November. If not now, then by the time they are blooming and you remember how much you like them… it will be too late!

There are lots of great asters available at our biannual Florakansas fundraisers. Sun-loving, shade-tolerant, and a myriad of colors to choose from, it can be overwhelming to decide on a variety. Check out Scott’s previous blog on asters to learn about a great variety of native asters. Here I will cover only those not included in that blog, as well as new varieties available at our upcoming FloraKansas event.

Aster lateriflorus ‘Lady In Black’

‘Lady In Black’ is quite showy with dark foliage and masses of bright flowers. Photo from Wikimedia Commons.

Calico aster is a lesser known species, but has a lot of garden potential. The ‘Lady in Black’ variety has dark foliage and white to blush colored flowers with pink centers. It looks great planted in masses, paired with sturdy grasses around it for support like Panicum ‘Northwind’ or ‘Purple Tears’. Its arching stems are graceful, and add a lot of energy and movement to a prairie garden or meadow planting.

Aster sericeus

File:Symphyotrichum sericeum (15354337036).jpg
Aster sericeus has a light purple flower, slightly cupped foliage and wire stems. Photo from Wikimedia Commons
By: peganum from Henfield, England, CC BY-SA 2.0

One of my personal favorites, it is often overlooked for flashier species. Silky aster is diminutive but tough as nails, and its wiry stems offer nice contrast to its light green, hairy leaves. It has a silver tint to it, especially from a distance, so it adds a wonderful cool tone to any hot, sunny place in the garden. It has a somewhat prostrate habit, so it benefits from sturdy plants around it for support. I’d pair this with Schizachyrium ‘Jazz’ or even some old fashioned lambs ear as both would bring out the blueish-silver tone of the foliage.

Silky aster is native throughout the Flint Hills and mixed grass prairie areas.
Map from USDA plants data base.

Aster novae-angliae ‘Grape Crush’

New England asters are known for their late blooms and towering height. As much as they are loved by pollinators, gardeners have come to curse them for becoming too tall and floppy. ‘Grape Crush’ is a shorter, denser variety. It keeps a much tidier habit and has a deep purple color. We will also have ‘Purple Dome’ New England type, which is very similar but perhaps with a slightly earlier bloom time. We are excited to try planting some ‘Grape Crush’ around our grounds this season!

Also available this spring…

  • Aster nova-belgii ‘Anton Kippenberg’ (a New York type that doesn’t flop, blue flowers in early fall)
  • Aster ericoides ‘Snow Flurry’ (less than 6″ tall, full sun/dry soil, toughest plant around)
  • Aster leavis ‘Bluebird’ (full sun, tall and floriferous!)
  • Aster divaracatus (white flowers, good in shade)
  • Aster cordifolus (white to bluish flowers, taller than A. divaricatus, good in dry shade)
  • Aster dumosus ‘Woods Blue’ and ‘Woods Purple’ (very short and compact)

Name Change

Note that many aster species have formally changed their taxonomic name to Symphyotrichum. Due to modern research and genetic study, botanists have found that not all asters belong in the same group, so Symphyotrichum is a new genus name that will help us better understand this huge family of plants. In our native plant guide you will find this name change already in action.