Date of Pictures: 06/25/2009
Location & Habitat: Alongside Pettigrew’s Creek among other large meadow vegetation, approximately 20m North of South McNaughton Road. GPS coords from road: 45.49312, -76.83714
Plant structure: Don’t Know
Stems: Round
Leaf orientation: Don’t Know
Cotyledon shape: Don’t Know
Margins (perimeter of leaf): Toothed
Leaf Shape: Elongated (length between 2 to 8 times the width)

I apologize for the lack of photos, I was performing a stream assessment at the time and was a bit preoccupied.  The plant was easily over a meter tall, hallow stem, hairless, stem colour ranged from green to purpleish-pink. Leaves were serrate and somewhat elongated.  It was growing about 3-4m from the creek.  The substrate was mostly clay (not sure if that helps at all) I had never seen anything quite like it.

I sent the photo to a collegue who sent me to your site. He thought it might be a Giant Hogweed.  I understand that I’m probably lacking some useful information for ID purposes, but if you are able to identify it and could get back to me, it would be greatly appreciated.

Thank you.

Jessica Danard

BRWP Riverwatch

The above plant is most likely Angelica atropurpurea, it is not Giant Hogweed.

Date of Pictures: 2009-11-26
Location & Habitat: Someone’s front lawn, Cole Road, Guleph ON
Plant structure: Don’t Know
Stems: Don’t Know
Leaf orientation: Don’t Know
Cotyledon shape: Don’t Know
Margins (perimeter of leaf): Deeply divided
Leaf Shape: Don’t Know

The above plant is common ragweed.

Date of Pictures: 07/15/2008
Location & Habitat: Corn field in Centre Wellington Twsp.
Plant structure: Don’t Know
Stems: Don’t Know
Leaf orientation: Opposite
Cotyledon shape: Oblong: (length between 1 to 3 times the width)
Margins (perimeter of leaf): Toothed
Leaf Shape: Elongated (length between 2 to 8 times the width)

Plant is ~50mm across.

Granules in the photo are recently applied 28-0-0.

The plant in the above picture is Cirsium arvense, Canada Thistle.

Date of Pictures: 2008/07/12
Location & Habitat: Cambridge, Ontario
Found beneath large shade trees
Plant structure: Don’t Know
Stems: Don’t Know
Leaf orientation: Don’t Know
Cotyledon shape: Don’t Know
Margins (perimeter of leaf): Toothed
Leaf Shape: Don’t Know

Leaves are heart-shaped with white, hairy undersides.

Weed grows very densely and may have yellow flowers on tall stalks above the canopy.

The above plant appears to be colt’s foot. More information on this species can be found here.

Date of Pictures: 2009/10/03
Location & Habitat: Overgrown hill slope below a barn.
Plant structure: Plant with Stem
Stems: Don’t Know
Leaf orientation: Alternate
Cotyledon shape: Don’t Know
Margins (perimeter of leaf): Entire (smooth)
Leaf Shape: Elongated (length between 2 to 8 times the width)

The plant in the above photo appears to be Lithospermum officinale

Date of Pictures: 11/01/2009
Location & Habitat:
Plant structure: Don’t Know
Stems: Don’t Know
Leaf orientation: Don’t Know
Cotyledon shape: Don’t Know
Margins (perimeter of leaf): Don’t Know
Leaf Shape: Don’t Know

The above plant appears to be Hemp dogbane. Of course you already know this as it appears to be a photo taken off of google images…..

Date of Pictures: 05/11/2008
Location & Habitat: King City. Growing in marsh (some kind of wetland plant).
Plant structure: Don’t Know
Stems: Don’t Know
Leaf orientation: Opposite
Cotyledon shape: Don’t Know
Margins (perimeter of leaf): Toothed
Leaf Shape: Elongated (length between 2 to 8 times the width)

We cannot identify the above plant with 100% certainty. It is possible that this plant is Veronica anagallis.

Date of Pictures: 2009-11-23
Location & Habitat: Georgetown,ON
Plant structure: Plant with Stem
Stems: Hairless
Leaf orientation: Opposite
Cotyledon shape: Spade Shaped
Margins (perimeter of leaf): Hairless
Leaf Shape: Round to oval (length less than 2 times the width)

Some other simillar looking plants had cylindrical stemmed, green round shaped seeds. plants were only 6-8 inches tall.

The above plant is Broad leaved plantain. More information on this species can be found here

Date of Pictures: 11/12/2009
Location & Habitat:
Plant structure: Plant with Stem
Stems: Round
Leaf orientation: Alternate
Cotyledon shape: Heart Shaped
Margins (perimeter of leaf): Toothed
Leaf Shape: Don’t Know

The above lant is Symphoricarpos orbiculatus, or Coralberry.

Date of Pictures: 2009-11-12
Location & Habitat: Unknown - left at my office
Plant structure: Don’t Know
Stems: Don’t Know
Leaf orientation: Don’t Know
Cotyledon shape: Don’t Know
Margins (perimeter of leaf): Don’t Know
Leaf Shape: Don’t Know

The above plant is Stork’s Bill Erodium cicutarium. More information on this species can be found here.