The 'Polyarnik' peony cultivar is a perennial plant with a bush height of about 70 cm and light green leaves. Flower stems reach a length of 80 cm; they are straight and of medium strength, each bearing one large double flower with a diameter of about 14 cm. The flowers have a spherical shape with petals in the inner circle being elliptical and those in the outer circle being inverse ovoid. The flower color is white with a delicate aroma; the stamens and anthers are yellow, the pistil is green, and the stigmas are pink. The cultivar has prolonged and abundant flowering, lasting about 10 days. The 'Polyarnik' cultivar is distinguished by high resistance to diseases, pests, and unfavorable weather conditions, making it unpretentious in care and suitable for cultivation in various climatic zones, including the middle belt of Russia. Thanks to these qualities, the cultivar is widely used as a cut flower, allowing for the creation of beautiful and long-lasting flowers for bouquets and decorative compositions. The peony belongs to the P. lactiflora group and has a late flowering period. The plant is frost-hardy and can withstand low temperatures, which expands its cultivation possibilities. The double, rose-like flowers of the 'Polyarnik' cultivar give it decorative appeal and make it a desirable element in garden compositions.