Hello, We have purchased a house with two established grape vines (I think they are Concord grapes) that produced huge quantities of grapes last summer. Because the vines had an ad-hoc support system we decided to build them a proper arbour to get them off the ground and make harvesting easier. We are also hoping to be able to use the space under the vines as a patio area. Question: do we run the risk of damaging the roots by laying some sort of paving surface (probably flagstone) under the vines - how far away from the trunks should we stay? Even if we left it as just grass, is the traffic on this area damaging to the roots? Thanks in advance for any advice. Neema.