An upright perennial that blooms in late spring to mid-summer.  Also known as clustered bellflowers.  These violet blooms make great cuts and also attract butterflies and hummingbirds. 
 
Plant these in full sun to half sun/half shade areas.  They prefer moist soil and spread via underground rhizomes.  Use them in areas you want them to naturalize.  Try pairing them with yarrow or coreopsis.
 
Grows 18-20" tall and should be spaced about 14" apart from each other to give them space to form a clump.  Water well until roots are established and you see new growth.
 
Pickup this Saturday at Brookside Farmer's Market or on-site at the farmstand located in south KC off of Red Bridge and Holmes Rd.  Address given after checkout.