Sowing March-April  in the box. A month later, when the seedlings are 10 cm tall to plant in a fixed location. It likes a  good garden soil, quite fertile and rather average moist in summer and sunny positions. When the sprigs reach 20-25 cm, trim them to half of height, so that the plants bloom luxuriantly. It blooms June to September forming   5-petal delicate flowers in shades of pink. We extend the flowering period by irrigation (if necessary), and feeding.