Commercially available

• B.O. Worcester

25 favorite votes.  
Average rating: EXCELLENT.  

Bred by Richard Smith & Company (United Kingdom, 1886).

Late Large Flowered.  

Blue-violet with white stamens.  6 petals.  Average diameter 6".  Semi-double to double bloom form.  Late summer to midautumn.  

Height: 6' to 8' (185 to 245cm).  

USDA zone 4b through 9b.  Plant in sun or partial shade.  Suitable for growing in a container.  This plant blooms twice.  It blooms on the previous year's growth, so resist the urge to prune it in early spring.  However, if you garden in a place with cold winters, Mother Nature will more than likely prune the plant for you.  It will bloom a second time on new growth.  

Diploid