Stokesia laevis

Stokesia laevis
Stokesia laevis 
Stoke's aster
SIZE/TYPE mid-sized perennial
USUAL HEIGHT 0.4-0.6m
USUAL WIDTH 0.3-0.5m
LEAVES deciduous broadleaf
COLOUR OF LEAVES green
FLOWERS showy
COLOUR OF FLOWERS violet
BLOOMING TIME July - September
LOCATION full to partial sun
USDA zone (lowest) 5b   (down to -27°C)
WINTER PROTECTION  
FOR ZONE 5+6 Code of winter protection zone 5+6
FOR ZONE 7 Code of winter protection zone 7
BELONGS TO CATEGORIES Perennials
Summer blooms
náhled fotonáhled fotonáhled foto

Stoke’s aster is a genus of just this one species. I fell in love with this charming perennial the first time I laid my eyes on it when I first saw it at Plantarium exhibition in Boskoop, the Netherlands, where it was presented as a little known, showy perennial.

Stoke’s aster makes large, soft lavender blue, cornflower-like flowers that are up to 10 cm across. They open in late July and if regularly deadheaded they continue popping up until autumn. The flowers take a few days before they mature completely to the flat shape but on the other hand they are quite long-lasting which is why they are very popular for cutting. The leaves are evergreen in milder climates, medium green, narrowly lance-shaped, long at the basal rosette, and quite short along the stems.

Stoke’s aster comes from S.E. USA where it grows naturally on the edges of conifer woods, in moist, acid soil. It is hardy enough to be grown in Europe, too, down to zone 5b provided the soil is sharply-drained in order to avoid winter root rot. Grow it in full sun for profusion of flowers and make sure the soil is acid which will enhance the flower colour. Hardy to about -27°C (USDA zone 5b).

Last update 20-07-2013
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Stokesia laevis
Stokesia laevis
Stokesia laevis
GLOSSARY
  • STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
  • DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
  • EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
  • STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
  • HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
  • SHRUB - a woody plant with branches growing bushy from the ground level.
  • HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
  • FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
  • GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
LARGE PLANTS over 150 cmspecimens, screening and hedging shrubs

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