Buddleia Black Knight is a stunning cultivar of Buddleja, commonly referred to as the Butterfly Bush or Summer Lilac. Buddleja Black Knight flowers in August, the tall conical blooms emerge at the end of the branches of this year's growth. The architectural spires of magenta colour, will enhance any border, the floral spikes are in fact a host of tiny tubular flowers that form as panicles. This is a sturdy cross betwen two of the most popular varieties - Buddleia Davidii and Nanho, not surprisingly this has proved to be a winner. Awarded the Award of Garden Merit by the RHS it is firmly on the map as a must have variety of Buddleia and will do well in most UK gardens.
Buddleja's are incredibly easy to grow and thriving in most soils as long as they are kept moist, yet well-drained. These deciduous shrubs are famed for their attraction to butterfies, which land on the flowers to drink the nectar, a Buddleia covered in butterflies is a fabulous sight.
Buddleia Black Knight will eventually achieve a height and spread of circa 3-4 metres but is easily kept in check if required, with a prune in early Spring. Trim back and shape in late March and the new year's growth will deliver the next fabulous displays of flowers. To keep them flowering for as long as possible, do remove the faded and dying flowers, this will extend the flowering time. At the end of their flowering remove the last drying flower spikes to avoid self-seeding.