Perovskia atriplicifolia
Botanical Name
Perovskia atriplicifolia
Hardiness
Zones 4 to 9
Height
3 to 5 feet
Width
30 to 36 inches
Flowers
Mid summer thru fall: blue
Light
Full sun
Soil
Well-drained to dry
Planting and Care
Space plants 30 to 36 inches apart, drought tolerant, older plants may need support, prune back to 4 inches in late winter, prune back new growth (12 inches) halfway for compact growth
Problems
None serious
Varieties to Consider
'Little Spire' - 30" version of species
'Longin' - narrower and more upright, leaves not as finely divided
'Filigran' - more compact, 30", leaves more finely divided
'Blue Spire' - 4'x3', profusion of violet-blue flowers, deeply divided leaves
'Longin' - narrower and more upright, leaves not as finely divided
'Filigran' - more compact, 30", leaves more finely divided
'Blue Spire' - 4'x3', profusion of violet-blue flowers, deeply divided leaves