Editing Crataegus (section)

===Grafting===
{{Further|Grafting}}
[[File:Medlar rootstock.jpg|thumb|upright|Hawthorn [[rootstock]] on a [[Mespilus germanica|medlar]] tree in [[Totnes]], UK]]

Hawthorn can be used as a [[rootstock]] in the practice of grafting. It is graft-compatible with ''[[Mespilus]]'' (medlar) and with pear,<ref name=":0">{{Cite journal |last=Asheghi |first=M. Sajad |date=1 March 2022 |title=Phenotypic Diversity of Crataegus orientalis subsp. szovitsii (Pojark.) K.I.Chr. Population in Markazi Province, Iran |url=https://doi.org/10.1007/s10341-021-00605-2 |journal=Erwerbs-Obstbau |language=en |volume=64 |issue=1 |pages=69–74 |doi=10.1007/s10341-021-00605-2 |s2cid=243803560 |issn=1439-0302}}</ref> and makes a hardier rootstock than [[quince]], but the thorny [[Sucker (botany)|suckering]] habit of the hawthorn can be problematic.<ref name="Phipps" />

[[Seedling]]s of ''[[Crataegus monogyna]]'' have been used to graft multiple species on the same trunk, such as [[Crataegus × media|pink hawthorn]], pear tree and medlar, the result being trees which give pink and white flowers in May and fruits during the summer. "Chip [[budding]]" has also been performed on hawthorn trunks to have branches of several varieties on the same tree. Such trees can be seen in [[Vigo]], Spain, and in the northwest of France (mainly in [[Brittany]]).{{Citation needed|date=May 2009}}