Perovskia, commonly known as Russian sage, is a lovely shrub that produces tubular, violet-blue flowers on silvery-grey stems with aromatic greyish-green leaves in late summer. It will do best in a sunny spot.
Good for smaller gardens.
Perovskia ‘Little Spire’
Perovskia ‘Little Spire’ is a compact variety with spikes of lavender-blue flowers and grey-green leaves. Expect a height of 60 cm and a spread of 60cm.
Perovskia ‘Blue Spire’
For a taller form look for Perovskia ‘Blue Spire’. It grows to about 1,2m tall. It has a tendency to flop over. So may need staking to keep it in an upright position.
When and how to prune perovskia (Russian sage).Cut back all of the previous year’s growth to 10cm above the woody framework in April, as new growth appears