Manual of Rootstocks

Supporter 4TMSemi-dwarf M26 class rootstock

Used for: Apple
Developed by: Pillnitz Research Station, Germany
Country of origin: Germany
Parentage: M9 x M4

Because of Supporter 4's variable performance in various trials, local authorities should be consulted to determine its value in your area.

Supporter 4 rootstock characteristics

  • Species compatibilityApple
  • Vigour % of standard55% - 60%
  • Rootstock size classSemi-dwarf
  • PrecocityPrecocious
  • Cold-hardinessCold-hardy
  • Country of originGermany
  • Woolly aphidSome resistance
  • PhytophthoraSome susceptibility
  • Burr knotsFew
  • Collar rotSome resistance
  • Crown GallSome resistance
  • Root suckersFew
  • Tomato Ringspot VirusSome susceptibility

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

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