Rootstock
The citrus varieties available today are grown on selected rootstocks. Rootstock are grown specifically for the benefits their roots convey to the citrus variety. Rootstocks enable trees to be grown in a wide range or climates and soil types.
| Rootstock | Soil type | Cold hardy | Salt tolerant | Drought tolerant | Characteristics |
| P. trifoliata |
heavy
|
high
|
low
|
poor
|
Excellent fruit quality |
| Troyer |
light
|
high
|
average
|
fair
|
Highly productive |
| Flying dragon |
heavy to light
|
very high
|
low
|
fair
|
Dwarf rootstock |
| Sour orange |
heavy to light
|
high
|
high
|
high
|
Used for lemons |
