Manual of Rootstocks

NemaguardStandard stone fruit rootstock

Used for: European plum, Japanese plum, Apricot, Peach, Almond, Mirabelle, Cherry plum, Damson
Developed by: USDA Fort Valley, Georgia
Country of origin: United States
Introduced: 1950s
Parentage: Prunus persica x Prunus davidiana

Nemaguard is the most-widely used and widely compatible standard class rootstock for peaches and almonds, also compatible with with Japanese and European plums, and apricots.

Nemaguard rootstock characteristics

  • Species compatibilityEuropean plum, Japanese plum, Apricot, Peach, Almond, Mirabelle, Cherry plum, Damson
  • Vigour % of standard105%
  • Rootstock size classVigorous
  • PrecocityPrecocious
  • Support requiredFree-standing
  • Chill requirementHigh-chill
  • DeveloperUSDA ARS
  • Country of originUnited States
  • Period of origin1950 - 1999
  • Bacterial cankerSome susceptibility
  • Root knot nematodeSome resistance
  • Ring nematodeSome susceptibility
  • Root lesion nematodeSome susceptibility
  • Honey / Oak root fungusSome susceptibility
  • PTSLVery susceptible
  • Crown GallSome susceptibility
  • Crown rotSome susceptibility
  • Root suckersMany
  • Plum pox virus / SharkaSome susceptibility
  • Verticillium Wilt (Blackheart)Some resistance

Find our more about this rootstock in the 'Manual of Worldwide Temperate Zone Fruit and Nut Tree Rootstocks'.