There is mixed information about how deep a grafted grape vine could be planted. It is safe to say it won't die if the graft union is covered in soil. But do you think it harms the grape vine by planting it say 10 inches below soil level? It will have really deep roots that will not be bothered by frost. What is the opinion out there?
I don't know what the reason is for grafting a grape vine; but regardless of the reason, the effectiveness of the graft will be quickly lost if the graft union is below ground level, since roots will soon develop above the graft union.
The reason is to use varieties such as vinifera and to avoid loss of the vine through disease mostly phyloxera and nematodes.
There a lot of different rootstocks used for grapes. The rootstock utilized influences factors like early ripening, soil types, nematode resistance,drought tolerant etc. If you grow V.vinifera in cold climates it's better to not use a rootstock in most cases. If the vine dies back to the ground the grape will come back from the roots. If it's grafted it won't. If you plant the graft below ground level the canes coming belwo ground will be the rootstock. What kind of grapes do you have right now and what variety do you want to grow. Cheers
I have baco noir, gamay noir, pino noir, pinot gris, gewurtzraminer, cabernet franc, riesling, vidal. How far away should one plant from a fence? (since we're on the topic of planting bearing in mind trunk diameter growth over the years!)
What kind of training system are you going to use for your grapes? All those grapes have different growth habits so you may want to consider some type of trellis/support system. http://extension.missouri.edu/publications/DisplayPub.aspx?P=G6090 Hope this helps Cheers
