Unknown Canadian weed

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Hoy
Hoy's picture
Title: Member
Joined: 2009-12-15
Unknown Canadian weed

This question popped up on a Norwegian site. Somebody has bought a property in Toronto. This weed(?) is everywhere:

 

http://www.biologforeningen.org/enbiolog/topic.asp?TOPIC_ID=44447

Lori S.
Title: Moderator
Joined: 2009-10-27

Looks like a shrub of some sort.... ??  I mainly just wanted to say that there are no "Canadian" weeds, only introduced European ones!    Big Grin

Lori
Calgary, Alberta, Canada - Zone 3
-30 C to +30 C (rarely!); elevation ~1130m; annual precipitation ~40 cm

Hoy
Hoy's picture
Title: Member
Joined: 2009-12-15

Yes, a shrub or a tree: I think they are runners from a kind of Populus or something like that.

And you are right about the weeds! I have no Canadian ones in my garden, just European ones! (The worst one is Circaea lutetiana)

Trond
Rogaland, Norway - with cool, often rainy summers  (29C max) and mild, often rainy winters (180 cm/year)!

Lori S.
Title: Moderator
Joined: 2009-10-27

Not Populus.  It looks somewhat familiar but I can't put my finger on it.

Lori
Calgary, Alberta, Canada - Zone 3
-30 C to +30 C (rarely!); elevation ~1130m; annual precipitation ~40 cm

Hoy
Hoy's picture
Title: Member
Joined: 2009-12-15

OK, thanks.

Trond
Rogaland, Norway - with cool, often rainy summers  (29C max) and mild, often rainy winters (180 cm/year)!

Novak
Title: Member
Joined: 2009-10-07

A young Rhamnus?? Around Toronto you might get the native Rhamnus alnifolia (in wetlands) or either of two non-natives, Rhamnus cathartica and Frangula alnus (formerly Rhamnus frangula).

Janet
Philadelphia, Pennsylvania, zone 7a
Webmaster for the Delaware Valley Chapter (dvcnargs.org)

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