Name	Perovskia atriplicifolia (Russian Sage)
Hardiness	Zone 5
Light	Full sun
Height	36-40"
Bloom Time	Late summer
Uses	Accent, back of the border, cutflowers, dried flowers.
Qualities	You probably won't see foliage on this plant until May in this area, but the foliage and flowers that come late in the season are well worth the wait.  1995 Perennial Plant of the Year.  Silver spiky aromatic foliage with long spikes of azure blue flowers in July and August.  Loves hot, dry conditions with well drained soil.

Name	Perovskia x "Filagran"
Hardiness	Zone 5
Light	Full sun
Height	38-42"
Bloom Time	Late summer
Uses	Accent, back of the border, cutflowers, dried flowers.
Qualities	You probably won't see foliage on this plant until May in this area, but the foliage and flowers that come late in the season are well worth the wait.  Silver spiky aromatic foliage with long spikes of electric  blue flowers in July and August.  Compact growth habit, very bushy.  Foliage is more finely textured than the straight species.  Loves hot, dry conditions with well drained soil.