PLANT LIFE WILDFLOWERS Three crucial ingredients for a Greek spring meadow are poor soil, plenty of sunlight and winter rain. Generally speaking, the poorer the soil, the richer the variety of flowers since poor soil gives them a chance to thrive by limiting the competitive edge of coarse vigorous grasses and weeds. On May Day, a national holiday, families go out into the countryside to pick flowers to make a wreath which they hang outside their house until 24 June. It is believed to ward off evil spirits and bring good luck. Cars, buses, fishing boats and taxis are also adorned with wreaths.