Soapwort (lat. Saponaria) – a low-growing perennial plant of the Carnation family, valued for its lush and long-lasting flowering, as well as ease of care. Bushes usually reach a height of 15 to 40 cm, forming compact thickets or neat bushes. Flowers are small, pink, lilac, or white, gathered in loose inflorescences; the flowering season lasts from June to August and sometimes repeats in autumn.
A feature of soapwort is the presence of saponins in its roots and stems, which form foam when shaken in water. This property led to the folk names 'dog soap' and 'Tatar soap'. Saponins find application in detergents for wool and silk, as well as in the food industry – in the production of halva, creams, effervescent drinks, and beer. In veterinary medicine, the plant is used as an anti-worming agent.
Growing soapwort requires full sun or light shade, loose and well-drained soil with a neutral or weakly alkaline reaction (pH 6.5–8.0). Planting includes preparing holes, burying roots 5–6 cm deep, and regular watering – 2–3 times a week in the first weeks after planting, then once every 5–7 days. Care involves loosening the soil, removing weeds, pruning faded inflorescences, and pinching back shoots. Soapwort is resistant to most diseases, but can be affected by powdery mildew, grey mold, and black leg; pests – aphids and spider mites. Reproduction is possible by seeds, cuttings, or dividing bushes.
