subject: How to grow grape vines [print this page] A need for good drainage is one of many reasons why many vineyards planted on slopes. Not only the steep slopes aid in drainage of the harvest, they are also generally low in nutrients and organic matter as a result of years of erosion. In addition to a trellis, grape vine root system requires sufficient anchorage ground, and support this great facility. They need about thirty to forty centimeters of loose soil to establish extensive root systems.
