This is where you can find research-based information from America's land-grant universities enabled by eXtension.org
All about understanding and choosing the right rootstock
Characteristics, descriptions, and how to choose the best to grow and eat
Buying and planting trees
Insects, diseases, wildlife and other challenges
Grafting, budding, tissue culture, and all about how rootstocks are developed
This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.