- See also:
- Dwarf M9 class28
SJM 189Intermediate dwarf rootstock
| Used for: | Apple |
| Developed by: | Agriculture and Agri-Food, Canada |
| Country of origin: | Canada |
| Parentage: | Nertchinsk x M.26 |
SJM 189 is the least susceptible of the SJM series rootstocks to Phytophthora cactorum.
SJM 189 rootstock characteristics
- Species compatibilityApple
- Vigour % of standard30% - 40%
- Rootstock size classDwarf
- PrecocityPrecocious
- Support requiredPermanent support
- Cold-hardinessCold-hardy
- Country of originCanada
- Woolly aphidSome resistance
- Fire blightSome resistance
- Powdery mildewSome resistance
- ScabSome resistance
- Burr knotsSome
- Collar rotSome resistance
- Crown rotSome resistance
- Root suckersSome
Find our more about this rootstock in the 'Manual of Worldwide Temperate Zone Fruit and Nut Tree Rootstocks'.