- See also:
- Intermediate dwarf10
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)Zone 4 (-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'.