Rootstock comparison table
| Rootstock | Supporter 4 |
|---|---|
| Summary | Because of Supporter 4's variable performance in various trials, local authorities should be consulted to determine its value in your area. |
| remove |
Using
| Supporter 4 | |
|---|---|
| Species compatibility | Apple |
| Vigour % of standard | 55% - 60% |
Growing
| Supporter 4 | |
|---|---|
| Rootstock size class | Semi-dwarf |
| Precocity | Precocious |
Climate
| Supporter 4 | |
|---|---|
| Cold-hardiness | Cold-hardy |
Identification
| Supporter 4 | |
|---|---|
| Country of origin | Germany |
Problems
| Supporter 4 | |
|---|---|
| Woolly aphid | Some resistance |
| Phytophthora | Some susceptibility |
| Burr knots | Few |
| Crown Gall | Some resistance |
| Collar rot | Some resistance |
| Root suckers | Few |
| Tomato Ringspot Virus | Some susceptibility |