Editing Eucalyptus (section)

==Frost intolerance==
Most eucalypts are not tolerant of severe cold.<ref name="Sellers1910">{{cite book |last=Sellers |first=C.H. |title=Eucalyptus: Its History, Growth, and Utilization|url=https://archive.org/details/eucalyptusitshis00sell|year=1910|publisher=A.J. Johnston|page=[https://archive.org/details/eucalyptusitshis00sell/page/13 13] |oclc=903889267}}</ref><ref name="Sekella2003">{{cite journal |last=Sekella |first=D. |title=Cold Hardiness of Five Eucalypts in Northern California |journal=Pacific Horticulture |volume=64 |issue=1 |date=January 2003 |url=http://www.pacifichorticulture.org/articles/cold-hardiness-of-five-eucalypts-in-northern-california/ |access-date=2016-08-31}}</ref><ref name="Hasey1990">{{cite journal |last1=Hasey |first1=J. K. |last2=Connor |first2=J. M. |title=Eucalyptus shows unexpected cold tolerance |journal=California Agriculture |volume=44 |issue=2 |pages=25–27 |date=1 March 1990 |doi=10.3733/ca.v044n02p25 |doi-broken-date=1 November 2024 |url=http://calag.ucanr.edu/Archive/?article=ca.v044n02p25 |access-date=2016-08-31 |doi-access=free |archive-date=2016-09-15 |archive-url=https://web.archive.org/web/20160915090629/http://calag.ucanr.edu/Archive/?article=ca.v044n02p25 |url-status=dead }}</ref> Eucalypts do well in a range of climates but are usually damaged by anything beyond a light frost of {{convert|-5|°C|0|abbr=on}};<ref name="Sellers1910" /><ref name="Sekella2003" /><ref name="Hasey1990" /> the hardiest are the snow gums, such as ''[[Eucalyptus pauciflora]]'', which is capable of withstanding cold and frost down to about {{convert|-20|°C|0|abbr=on}}.<ref name=KEW>{{cite web|title=''Eucalyptus pauciflora''|url=http://apps.kew.org/trees/?page_id=115|archive-url=https://web.archive.org/web/20130312182144/http://apps.kew.org/trees/?page_id=115|archive-date=2013-03-12|url-status=dead|publisher=[[Kew Royal Botanic Gardens]]|access-date=26 July 2013}}</ref> Two subspecies, ''E. pauciflora subsp. niphophila'' and ''E. pauciflora subsp. debeuzevillei'' in particular are even hardier and can tolerate even quite severe winters. Several other species, especially from the high plateau and mountains of central [[Tasmania]] such as ''[[Eucalyptus coccifera]]'', ''[[Eucalyptus subcrenulata]]'' and ''[[Eucalyptus gunnii]]'',<ref name=ATS>{{cite web|title=''Eucalyptus gunnii'' subsp. ''divaricata'' (Miena Cider Gum)|work=[Australian] Threatened species & ecological communities|publisher=Dept. of the Environment [Australia]|url=http://www.environment.gov.au/node/16369|access-date=23 November 2013}}</ref> have also produced extreme cold-hardy forms and it is seed procured from these [[genetics|genetically]] hardy strains that are planted for ornament in colder parts of the world.