Lysimachia atropurpurea - Purple gooseneck Loosestrife

Lysimachia atropurpurea, also known as purple loosestrife, is a magnificent, fast-growing plant often grown as a biennial. It forms a cluster of sturdy stems covered with beautiful silver-green foliage that serves as a backdrop for arching spikes adorned with small purple flowers that are so dark they can appear black. The combination of flowers and foliage creates a rare and precious combination in the garden. This loosestrife thrives in full sun or partial shade, in moist and humus-rich soil, or in large pots. Its flowers can be cut to create beautiful bouquets.

Lysimachia atropurpurea is a compact and short-lived perennial plant. It is native to the Balkans and belongs to the primrose family. It grows from a dense crown, forming a cluster of sturdy, upright stems, 70 to 80 cm (28 to 32in) high. It is characterised by terminal inflorescences, 20 cm (8in) long, adorned with very small dark purple flowers that bloom in thin, incurved spikes from June to September. The 15 cm (6in) long lanceolate and wavy leaves are covered in silver-grey, creating a striking contrast of colours.

Lysimachia atropurpurea is ideal for the back of a slightly wild, sunny flower bed. Plant it alongside phlox, sage, bee balm, etc...It can be grown in flower beds or containers. It is perfect at the edge of water features or in damp rock gardens, alongside primulas, willowherbs, and ironweeds. This plant is useful for its unassuming yet effective presence in flower beds, where its upright habit and glaucous foliage enhance heavier plants or more vibrant blooms. It can become invasive if the conditions are right, self-seeding in fertile, well-drained, moist soil.