Perovskia 'Blue Spire'

Perovskia ‘Blue Spire’: A Spectacular Beauty in Your Garden

Perovskia ‘Blue Spire’, also known as Blue Spire Russian Sage, is a popular garden plant admired for its stunning blue flowers. Belonging to the Lamiaceae family, this perennial plant is native to Central Asia. With its hardiness suitable for USDA zones 5-9, Perovskia ‘Blue Spire’ thrives in dry and hot climates, showcasing its resilience to drought and heat.

It forms an upright growth reaching 3-4 feet in height and width. The plant blooms from mid-summer until fall, displaying deep blue flowers arranged in elegant spikes. Its versatility makes it an excellent choice for borders and mass plantings.

Plant Description and Cultivation

Perovskia ‘Blue Spire’ presents an erect, multi-stemmed, deciduous sub-shrub adorned with clusters of small violet-blue flowers. These delicate blooms appear on thin white stems, complemented by finely-dissected, gray-green leaves with a pleasant fragrance. Despite its delicate appearance, this plant is remarkably tough, exhibiting resistance to drought, heat, pests, and poor soils. Its long blooming season contributes to its value, even in winter, as the stems create a captivating feature in the landscape.

Typically growing to a height and width of 2-3 feet (60-90 cm), Perovskia ‘Blue Spire’ thrives in full sun and well-drained soil. It can also tolerate dry and chalky soil conditions. Trimming the plant back in early spring promotes stronger and bushier growth.

Russian Sage or Perovskia 'Blue Spire'
Russian Sage

Cultivation and Care Tips of Perovskia ‘Blue Spire’:

Planting: Choose a location that receives full sun, although partial shade is also tolerable. Ensure the soil is well-drained and slightly acidic to neutral. Prior to planting, enrich the soil by incorporating compost or manure. Space the plants 2-3 feet apart.

Watering: Once established, Perovskia ‘Blue Spire’ is drought-tolerant. However, regular watering is beneficial during the first year after planting. Water deeply and infrequently to encourage deep root growth.

Fertilizer: Perovskia ‘Blue Spire’ does not require frequent fertilization. A light application of fertilizer in the spring will support new growth and overall plant vigor.

Pruning: Minimal pruning is needed for Perovskia ‘Blue Spire’. Deadheading spent flowers will encourage continuous blooming. In the fall, consider cutting back one-third of the plant to stimulate new growth in the following spring.

Overwintering: Perovskia ‘Blue Spire’ is hardy in USDA zones 5-9. In colder climates, applying mulch around the plants provides protection from the cold.

By following these cultivation and care guidelines, you can embrace the captivating beauty of Perovskia ‘Blue Spire’ in your garden. Its striking blue flowers, resilience, and adaptability make it a remarkable addition to any landscape, whether in dry landscapes, cottage or Mediterranean gardens or when paired with complementary plants. Enjoy its attractive presence, which attracts pollinating bees, butterflies, and hummingbirds, while relishing the ease of its maintenance.

Perovskia 'Blue Spire'
Dense flowers of Perovskia ‘Blue Spire’, Russian Sage
Perovskia 'Blue Spire'
Beautiful flowers of Perovskia ‘Blue Spire’
Perovskia 'Blue Spire'
Purple flowers of Perovskia ‘Blue Spire’ at Kew Gardens
Agastache Blackadder and Perovskia 'Blue Spire'
Agastache Blackadder and Perovskia ‘Blue Spire’ at Kew Gardens with the Hive Exhibit in the background

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