Manual of Rootstocks

SJM 15Dwarf M9 class rootstock

Used for: Apple
Developed by: Agriculture and Agri-Food, Canada
Country of origin: Canada
Introduced: 1974
Parentage: Nertchinsk x M.9

SJM15 is the most susceptible of the ‘SJM’ series to Phytophthora cactorum, but is the most precocious of the SJM series.

SJM 15 rootstock characteristics

  • Species compatibilityApple
  • Vigour % of standard25% - 35%
  • Rootstock size classDwarf
  • PrecocityPrecocious
  • Support requiredPermanent support
  • Cold-hardinessCold-hardy
  • Cold hardiness (USDA)(4) -30F / -34C
  • Country of originCanada
  • Period of origin1950 - 1999
  • Woolly aphidSome resistance
  • Collar rotSome susceptibility
  • Crown rotSome susceptibility

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

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