Agastache ‘Black Adder’ is a perennial plant. I have personally grown this beautiful flowering perennial in my garden for several years and it has proven to be a reliable and long-lasting addition to my landscape.
Being a perennial means that Agastache ‘Black Adder’ will come back year after year, providing you with its stunning blooms and attractive foliage. This particular variety of Agastache is known for its dark purple flowers and aromatic leaves, which add both visual interest and fragrance to any garden.
To care for Agastache ‘Black Adder’, it is important to understand its growth habit and seasonal requirements. As a deciduous perennial, it will naturally die back in the winter months and then regrow in the spring. To promote healthy growth and maintain a tidy appearance, it is recommended to cut back the stems close to ground level from late February through the end of March.
During this pruning process, you can choose to either leave the cut stems on the border as a natural mulch or compost them. Personally, I like to leave the cut stems as mulch, as they can help suppress weed growth and retain moisture in the soil. However, if you prefer a cleaner look or have concerns about potential disease or pests, composting the cut stems is also a good option.
By cutting back the stems of Agastache ‘Black Adder’ in early spring, you are allowing new growth to emerge from the base of the plant. This pruning also helps rejuvenate the plant and encourages better flowering later in the season.
In terms of general care, Agastache ‘Black Adder’ prefers full sun to partial shade and well-draining soil. It is relatively drought-tolerant once established, but regular watering during dry periods is beneficial. Deadheading spent flowers can prolong the blooming period and keep the plant looking tidy.
Agastache ‘Black Adder’ is a wonderful perennial plant to include in your garden. Its beautiful flowers, aromatic foliage, and easy-care nature make it a popular choice among gardeners. Whether you choose to leave the cut stems as mulch or compost them, the important thing is to give this perennial the pruning it needs in late winter or early spring to ensure its continued health and vitality.
