Pinguicula grandiflora, commonly known as the large-flowered butterwort, is a perennial herbaceous plant that is part of the carnivorous Lentibulariaceae family. It is native to moist, nutrient-poor, calcareous grasslands and mountainous regions in parts of Europe, including France, Ireland, Spain, and Switzerland. The plant typically grows in wet, boggy areas, often near streams or in alpine meadows, where it can take advantage of the high humidity to supplement its nutrient intake by capturing insects. Pinguicula grandiflora reaches a modest size, with a rosette of basal leaves and flowering stems that can be up to 5 inches (12 cm) tall. Its leaves are succulent, green, and covered with glandular hairs that produce a sticky substance to trap insects. The large, violet flowers bloom from May to July and are quite showy, with a two-lipped structure typical of the family.

The large-flowered butterwort is valued for its unique insectivorous habit and striking flowers, making it a fascinating addition to bog gardens, terrariums, or as a specimen in a collection of carnivorous plants. It requires consistent moisture and prefers a sunny to partly shaded location with cool temperatures. It is generally easy to maintain if its specific soil and water needs are met. In cultivation, it is important to use a soil mix free of fertilizers and rich in peat or moss to mimic its natural boggy habitat. While not common, it can suffer from rot if overwatered or if the humidity is too low. This species has been introduced to England and Wales, where it has naturalized in some boggy areas. There are two recognized subspecies, Pinguicula grandiflora subsp. grandiflora and Pinguicula grandiflora subsp. rosea, which differ slightly in flower color and distribution. Gardeners should be aware that while not typically invasive, it can spread if conditions are ideal, and care should be taken to prevent escape into natural wetlands outside its native range.CC BY-SA 4.0