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Stock Availability: In Stock
Price range: £8.75 through £30.00
Price range: £8.75 through £30.00
Price range: £8.75 through £30.00
Price range: £8.75 through £30.00
Price range: £8.75 through £30.00
Plant information
Plant Description
Agastache ‘Black Adder’ is a compact variety ideally placed at the front of borders or in containers. It features impressive large blue/purple flower spikes accompanied by lush green foliage. This plant brings continuous blooming joy throughout the summer months. ‘Black Adder’ displays resilience, thriving in poor soils and demonstrating tolerance for dry periods once it has established itself. With its captivating appearance and adaptability, this agastache variety is a fantastic choice for enhancing gardens or potted displays.
Perennials thrives in full sun—around six hours a day. While it can tolerate light shade, you’ll get the best flowering in bright, open spots.
It prefers well-drained soil, ideally sandy or chalky. Rich or heavy soils can cause the plant to flop and reduce flower production.
Water well during the first growing season to help it establish. Once settled, Achillea is drought-tolerant and rarely needs extra water unless it’s extremely dry.
Not much at all. In fact, too much fertiliser—especially nitrogen—can lead to more leaves and fewer flowers. A light feed in spring is plenty, if needed.
Yes—regularly remove faded flowers to encourage more blooms and stop self-seeding. You can cut the plant back in autumn or early spring to tidy it up and boost new growth.
Divide clumps every 3 to 5 years in spring or autumn to keep them healthy and vigorous. You can also take soft cuttings in spring.
Very much so. Once it’s established, it copes brilliantly in dry conditions, making it perfect for sunny borders and gravel gardens.
Achillea is generally low-maintenance, but it can occasionally suffer from aphids or powdery mildew—especially in humid or overcrowded spots. Good airflow and spacing usually prevent problems.
