Rootstock comparison table
| Rootstock | SJM 15 |
|---|---|
| Summary | SJM15 is the most susceptible of the ‘SJM’ series to Phytophthora cactorum, but is the most precocious of the SJM series. |
| remove |
Using
| SJM 15 | |
|---|---|
| Species compatibility | Apple |
| Vigour % of standard | 25% - 35% |
Growing
| SJM 15 | |
|---|---|
| Rootstock size class | Dwarf |
| Precocity | Precocious |
| Support required | Permanent support |
Climate
| SJM 15 | |
|---|---|
| Cold-hardiness | Cold-hardy |
| Cold hardiness (USDA) | Zone 4 (-34C) |
Identification
| SJM 15 | |
|---|---|
| Country of origin | Canada |
| Period of origin | 1950 - 1999 |
Problems
| SJM 15 | |
|---|---|
| Woolly aphid | Some resistance |
| Collar rot | Some susceptibility |
| Crown rot | Some susceptibility |