Nature Small vegetables fleeceThis black growth membrane from Nature is specially for the cultivation of small vegetables like onions, beets, spinach and green beans. The growth membrane has 175 perforations with a diameter of 45 mm. The perforated holes are spaced 15 cm apart to make planting and plant growth easier. The membrane protects the soil from dehydration and reduces evaporation of water, meaning you don't have to water as often. The strong growth membrane is UV