Lysimachia monelli, commonly known as Blue Pimpernel or Flaxleaf Pimpernel, is a perennial herb native to the Mediterranean region, specifically thriving in dry, rocky areas and Mediterranean scrublands. It typically grows at a moderate rate to a height and width of 0.5-1 feet (0.15-0.3 meters). The plant is characterized by its lance-shaped leaves and bright blue, star-shaped flowers that bloom in summer, adding a splash of color to the garden. The flowers are particularly showy, making it a favorite among gardeners for ornamental use.

Blue Pimpernel is valued for its drought tolerance and vibrant flower display, making it suitable for rock gardens, borders, and as ground cover. It is also used in xeriscaping, a landscaping method that reduces or eliminates the need for supplemental water from irrigation. While it prefers full sun or part shade, it is adaptable to various soil types, including clay, loam, or sandy soils, provided they have medium or fast drainage. Regular watering is needed, but the plant can tolerate periods of dryness once established. Gardeners should be aware that in some conditions, Lysimachia monelli can spread aggressively, potentially becoming invasive.CC BY-SA 4.0