Buddleia × 'Pugster Blue' brings the classic butterfly bush look to small spaces, with large, saturated blue-purple flower spikes on a compact, mounded plant. You get sturdy stems, heavy bloom, and a long season of color when the plant is sited well.
Plant it where it will receive full sun for the strongest flowering and the tightest habit. Provide well-drained soil, and water regularly the first season to help roots establish. Once established, water during extended dry spells to keep the plant looking its best and blooming steadily.
At maturity, this dwarf selection stays around 22-24 inches tall and makes a tidy, garden-friendly shrub for borders, mixed beds, and patio plantings. The flowers are a magnet for pollinators in summer, and the compact size makes it easy to tuck into sunny spots where traditional butterfly bushes would be too large.
In colder parts of its range, some winter dieback can occur; prune in early spring as new growth begins, removing dead wood and shaping the plant to encourage fresh flowering stems. Avoid heavy fall pruning in colder climates.