Agastache ‘Blue Boa’
Giant hyssop 'Blue Boa'
Agastache ‘Blue Boa’ is a vibrant perennial known for its dense spikes of deep violet-blue flowers, blooming from midsummer to early autumn. Typically reaching 50-100cm in height, it excels in borders, pollinator gardens, and mixed containers.
Thriving in full sun and well-drained soil, it attracts bees, butterflies, and other pollinators. The aromatic, liquorice-scented foliage enhances its appeal. Low-maintenance and drought-tolerant once established, Agastache ‘Blue Boa’ adds enduring colour and texture to any garden landscape, making it a favourite among gardeners.
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These images are for illustration purposes only. Plants are delivered in nursery pots and other individual features may not be present due to seasonality.
Plant Biography
The genus Agastache, part of the Lamiaceae (mint) family, includes around 22 species of aromatic perennials, commonly known as giant hyssops or hummingbird mints. Native to North America and East Asia, these plants are valued for their medicinal, culinary, and ornamental uses.
Many Agastache species have been used in traditional non-Western medicine for centuries. In horticulture, Giant Hyssop is popular for its vibrant flowers, aromatic foliage, and ability to attract pollinators like bees, butterflies, and hummingbirds. Modern cultivars, such as Agastache ‘Blue Boa’, are bred for enhanced colour, fragrance, and garden performance.
Care & Size Guidance
Agastache ‘Blue Boa’ is a hardy perennial that thrives in full sun and well-drained soil. It typically grows to a height of 50-100cm and spreads about 20-50cm, making it ideal for borders and pollinator gardens. The plant is drought-tolerant once established and requires minimal maintenance. Regular watering during dry periods helps maintain vibrant blooms from midsummer to early autumn.
Prune back in late winter to encourage fresh growth. Its aromatic, liquorice-scented foliage attracts bees, butterflies, and other pollinators, enhancing garden biodiversity.
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