Editing Willow (section)

===Pests and diseases===
Willow species are hosts to more than a hundred aphid species, belonging to ''Chaitophorus'' and other genera,<ref>{{cite book|title=Aphids on the World's Trees|author1=Blackman, R. L.|author2=Eastop, V. F.|year=1994|publisher=CABI|isbn=9780851988771|url=http://www.aphidsonworldsplants.info/w_HOSTS_S.htm#Salix}}{{Dead link|date=August 2019 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> forming large colonies to feed on plant juices, on the underside of leaves in particular.<ref>{{cite book|title=Pests of Ornamental Trees, Shrubs and Flowers|author=David V. Alford|year=2012|pages=78|publisher=Manson Publishing Limited |url=https://books.google.com/books?id=AUqYrRc8-AcC&pg=PA78|archive-url=https://web.archive.org/web/20130604015345/http://books.google.com/books?id=AUqYrRc8-AcC&pg=PA78|url-status=dead|archive-date=4 June 2013|isbn=9781840761627}}</ref> ''[[Corythucha elegans]]'', the willow lace bug, is a bug species in the family [[Tingidae]] found on willows in North America. ''[[Rhabdophaga rosaria]]'' is a type of gall found on willows.

[[Rust (fungus)|Rust]], caused by fungi of genus ''[[Melampsora]]'', is known to damage leaves of willows, covering them with orange spots.<ref>{{cite web|url=http://plantclinic.cornell.edu/factsheets/willowleafrust.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://plantclinic.cornell.edu/factsheets/willowleafrust.pdf |archive-date=2022-10-09 |url-status=live |title=Leaf Rust |author=Kenaley, Shawn C.|year=2010 |display-authors=etal}}</ref>