Manual of Rootstocks

M9-T337Dwarf M9 class rootstock

Used for: Apple
Developed by: Naktuinbouw
Country of origin: Netherlands
Parentage: M9

M.9-T337 is the current dominant strain used commercially in the M9 class. It is virus free. Some say that mice like this tree.

M9-T337 rootstock characteristics

  • Species compatibilityApple
  • Vigour % of standard30% - 40%
  • Rootstock size classDwarf
  • PrecocityPrecocious
  • Support requiredPermanent support
  • Cold-hardinessCold-hardy
  • DeveloperNAKB
  • Country of originNetherlands
  • Woolly aphidVery susceptible
  • Fire blightVery susceptible
  • ScabVery resistant
  • Burr knotsSome
  • Collar rotSome resistance
  • Crown rotSome resistance
  • Root suckersFew

See also

  • M9

    Developed at the famous East Malling Research Center in England, M.9 was the first dwarfing apple rootstock and remains the benchmark in this size class.

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

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