'Purrsian Blue' is a compact perennial with greyish-green, toothed, aromatic leaves. This perennial maintains a nice bushy and compact habit and, more importantly, just keeps on producing its short spikes of periwinkle to sky blue flowers with smoky purple calyces
 
Best in a sunny spot, perfect for the frount of boarders, and its strong habit being ideal for pot and containers as well. 
 
Flowering: June - Nov Ht: 45cm