Editing Fruit tree propagation (section)

===Cherry rootstocks===
Until the 1970s, [[cherry|cherries]] were grown on the vigorous "Malling F12/1", "Mazzard" (''Prunus avium''), or "Maheleb" (''P. maheleb'') rootstocks, which required much space and time before cropping began, thus the growing of cherries was not a realistic option on a garden scale. The introduction of the rootstock "Colt" enabled trees reaching a maximum height of {{convert|12|to|15|ft|m|abbr=on}} to be grown, and if trained as a pyramid it is possible to restrict growth to about {{convert|10|ft|m|abbr=on}}.<ref name=Hessayon>[[Hessayon, Dr. D. G.]], ''The Fruit Expert'', Transworld Publishers Ltd, 1997, p37 {{ISBN|0-903505-31-2}}</ref> The popular sweet variety "Stella" can even be successfully grown in a pot on the patio when grafted onto a "Colt" rootstock.<ref name=Hessayon/> A newer rootstock, "Gisela 5",<ref>{{cite journal |url=http://www.lsdi.lt/straipsniai/25-3/25(3)-29.pdf |title=Use of Gisela 5 for sweet cherries |first1=Jef |last1=Vercammen |first2=Guy |last2=Van Daele |name-list-style=amp |first3=Toon |last3=Vanrykel |journal=Scientific Works of the Lithuanian Institute of Horticulture and Lithuanian University of Agriculture |department=Gardening and Vegetable Growing|date=2006 |volume=25 |issue=3 |pages=218–223 |access-date=2012-09-26 |archive-url=https://web.archive.org/web/20120325224650/http://www.lsdi.lt/straipsniai/25-3/25(3)-29.pdf |archive-date=2012-03-25}}</ref> is slowly becoming available to gardeners and produces a tree 20% smaller than "Colt" and 45% smaller than "Mahaleb" and "Mazzard", making netting for bird protection much easier. Furthermore, German Nurseries Consortium (Consortium Deutscher Baumschulen&nbsp;— CDB®) is introducing across the EU their newest most dwarfing "Gisela 3" cherry rootstock that has 50% dwarfing qualities in comparison with "Mahaleb" and "Mazzard" and is 10% smaller still than "Gisela 5" rootstock.