One of the first messengers of heat in the spring garden . This perennial forms a dense lush shrub, height of about 30 cm, grows abundantly so that the diameter of the bush can reach 1 meter. White flowers with a diameter of about 1.5 cm Despite the small size of their flowers the quantity is large : one plant can simultaneously develop thousand blooming flowers blooming so it is like a white cloud and the green leaves almost invisible.