Manual of Rootstocks

St. Julien ASemi-vigorous stone fruit rootstock

Used for: European plum, Japanese plum, Peach, Mirabelle, Damson
Developed by: East Malling Research Center
Country of origin: United Kingdom
Introduced: 1950s

St. Julien A is compatible with all varieties of plums, peaches, nectarines and most apricots. Some say it is not a choice rootstock for apricots. Semi-dwarf rootstock for cold areas with fluctuating spring temperatures.

St. Julien A rootstock characteristics

  • Species compatibilityEuropean plum, Japanese plum, Peach, Mirabelle, Damson
  • Vigour % of standard75%
  • Rootstock size classSemi-vigorous
  • PrecocityPrecocious
  • Support requiredFree-standing
  • Cold-hardinessCold-hardy
  • DeveloperEast Malling Research Station
  • Country of originUnited Kingdom
  • PhytophthoraSome resistance
  • Bacterial cankerSome resistance
  • Root knot nematodeVery susceptible
  • PTSLVery susceptible
  • Crown GallSome resistance
  • Root suckersSome

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