Understanding Rootstocks for Grafting Plants

Rootstocks are the underground part of a grafted plant, which provides the roots for the grafted scion. The rootstock determines the growth habit and tolerance to certain soil conditions of the resulting grafted plant.

Rootstocks can be either own-rooted or grafted onto another rootstock. Own-rooted plants have their own roots, while grafted plants have the roots of one plant (the scion) grafted onto the roots of another plant (the rootstock).

There are many different types of rootstocks available for grafting, each with its own unique characteristics and advantages. Some common types of rootstocks include:

1. Dwarfing rootstocks: These rootstocks are used to control the size of a plant, making it smaller and more compact. They are often used for fruit trees and berry bushes.
2. Standard rootstocks: These rootstocks provide a balanced growth habit and are suitable for most garden plants.
3. Inert rootstocks: These rootstocks do not produce any roots of their own, but instead rely on the scion to provide the roots. They are often used for plants that are difficult to root, such as some species of roses.
4. Tolerant rootstocks: These rootstocks are resistant to certain soil conditions, such as wet soils or alkaline soils. They can help to improve the overall health and vigor of a plant.
5. Disease-resistant rootstocks: These rootstocks are resistant to certain diseases, such as root rot or fungal infections. They can help to protect the plant from these diseases and improve its overall health.

Overall, rootstocks play an important role in grafting by providing the roots for the grafted plant. By selecting the right rootstock for the specific needs of the plant, growers can improve the growth habit, tolerance to soil conditions, and overall health of the resulting grafted plant.