Manual of Rootstocks

GuardianStandard stone fruit rootstock

Used for: Peach
Developed by: USDA ARS and Clemson University
Country of origin: United States
Introduced: 1993

Guardian is a popular standard rootstock for peaches, the first with resistance to PTSL.

Guardian rootstock characteristics

  • Species compatibilityPeach
  • Vigour % of standard105%
  • Rootstock size classStandard
  • PrecocityPrecocious
  • Cold-hardinessCold-hardy
  • DeveloperClemson University, USDA ARS
  • Country of originUnited States
  • Period of origin1950 - 1999
  • Bacterial cankerSome resistance
  • Root knot nematodeSome susceptibility
  • Ring nematodeSome resistance
  • Root lesion nematodeSome resistance
  • Honey / Oak root fungusSome susceptibility
  • PTSLVery resistant
  • Root suckersFew

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

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