[CANUFNET] Tree "Sexism" in Canada: Call for information & thoughts

[Rebecca Seltzer]

Hello everyone,

We at Tree Canada just received some questions from a reporter at the Guardian, and I thought it would be good to share with the wider urban forestry community. Please do contact Ally Hirschlag directly with your comments.

Context:
"Male trees are cleaner and easier to manage than female trees. Unlike their female counterparts, distinctly male plants produce pollen but do not produce seeds, pods and fruit, which fall to the ground and create mess. Female trees also attract pests, including bees, because they provide a source of food." Source<https://globalnews.ca/news/5403667/botanical-sexism-climate-change-asthma-allergies/>

"Commercial horticulture produces vast numbers of all-male clonal selections from dioecious plants [...] Close to 100% of all the ash (Fraxinus), poplar (Populus), pistache (Pistacia), bay laurel (Laurus), junipers (Juniperus), willows (Salix), gingko tree (Gingko), Griselinia (Griselinia), mulberries (Morus), yellowwood (Podocarpus), locust (Gleditsia) and logwoods (Xylosma) sold are clonal males." Source<https://books.google.ca/books?redir_esc=y&id=pAJCDwAAQBAJ&q=clonal+males#v=snippet&q=clonal%20males&f=false>

The questions:

  *   In Canada, has there been a significant proportion of entirely male trees or male clones planted in urban areas? Why has this trend been perpetuated?
  *   Has this caused an uptick in pollen dispersal in urban communities?
  *   Do you know of specific communities in Canada looking to lower their pollen count by adding more female trees and/or less allergy-causing pollinators?
  *   What else are communities in Canada doing to combat worsening allergies in urban or suburban areas due to high tree pollen counts?
Contact information:
Ally Hirschlag
ally.hirschlag at gmail.com<mailto:ally.hirschlag at gmail.com>
2013144322

Thank you all!

[TreeCanada Logo]
Rebecca Seltzer
Program Assistant | Assistante de Programme
treecanada.ca  arbrescanada.ca<https://arbrescanada.ca/>
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