Date of Pictures: 08/28/2010
City/Town: newmarket
Location & Habitat:
Plant structure: Plant with Stem
Stems: Hairs
Leaf orientation: Opposite
Cotyledon shape: Don’t Know
Margins (perimeter of leaf): Toothed
Leaf Shape: Elongated (length between 2 to 8 times the width)

I found this in my backyard. It is quite prickly in the stem and caused some hives.

It was about 2-3 ft tall.

The stem was rounded with vertical grooves

The above plant appears to be stinging nettle, Urtica dioica.

Date of Pictures: 08/29/2010
City/Town: Gravenhurst
Location & Habitat: On Leo Trail off James Street West between Granite Trail and west end of trail.
Plant structure: Plant with Stem
Stems: Don’t Know
Leaf orientation: Don’t Know
Cotyledon shape: Elongated (length between 3 to 8 times the width)
Margins (perimeter of leaf): Toothed
Leaf Shape: Elongated (length between 2 to 8 times the width)

The above is a wild lettuce, but we are unable definitively identify whether it is Tall Blue Lettuce, or Canada Lettuce.

Date of Pictures: 2010-08-27
City/Town: Pembroke
Location & Habitat: Backyard garden, growing beside a daylilly, hosta and globe cedar.
Plant structure: Plant with Stem
Stems: Hairs
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)

I may be incorrect on the above characteristics. There are many little caterpillar-like projections, that look like seeds. There are little hairs on the branches and the leaves are smooth. This plant was not here previous years, it appeared about 6 weeks ago and has grown rapidly. No changes or alterations have been made to the flower bed except for tilling plain grass one year to add a hosta, lilly and globe cedars.

The above plant is common ragweed.

Date of Pictures: 2010-08-24
City/Town: Simcoe, Ontario
Location & Habitat: blueberry field, near woods
Plant structure: Plant with Stem
Stems: Round
Leaf orientation: Opposite
Cotyledon shape: Don’t Know
Margins (perimeter of leaf): Entire (smooth)
Leaf Shape: Elongated (length between 2 to 8 times the width)

tgis weed is a vogourous vine twisting like a morning glory, using blueberry stems for support.

the above plant is most likely Apios americana, which goes by a number of common names including Ground nut.

Date of Pictures: 08/02/2010
City/Town: Trenton
Location & Habitat: field that has been fallow. is in two large patches
Plant structure: Plant with Stem
Stems: Flat
Leaf orientation: Don’t Know
Cotyledon shape: Don’t Know
Margins (perimeter of leaf): Toothed
Leaf Shape: Don’t Know

This field was burnt off two weeks ago, rest of weeds dead but there are two patches of this weed left.  If you have any questions please let me know.

thanks

The above plant is a ironically called Sensitive fern, Onoclea sensibilis.

Date of Pictures: 08/02/2010
City/Town: Brampton
Location & Habitat: In School yard along fenceline
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 most likely Lactuca serriola, prickly lettuce.

Date of Pictures: 08/23/2010
City/Town: Danville, WV
Location & Habitat: Field
Plant structure: Plant with Stem
Stems: Square
Leaf orientation: Opposite
Cotyledon shape: Don’t Know
Margins (perimeter of leaf): Entire (smooth)
Leaf Shape: Linear (length over 8 times the width)

The leaves begin to turn white near the top of the plant near the seed pods appearing to turn to flowers and has a mint odor

The above plant is most likely Pycnanthemum albescens.

Date of Pictures: 08/01/2010
City/Town: Ottawa
Location & Habitat: Plant 1 is growing in the middle of some kind of flowering bush. Plant 2 is growing through our pool decking near a hedge and gate.
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: Elongated (length between 2 to 8 times the width)

Plant 1 - I thought - may be a maple tree that found a poor home but I’m not convinced.  It does seem to have a ‘trunk’.  It’s about 5 feet high and the leaves are about 4 inches wide.

Plant 2 - has thorns or hairs on the stem and the leaves look almost prickly - picture 2c is great as an example.  It’s about 3′ tall.

We cannot make out the identification of Plant # 1 based on the photos. Plant # 2 is a wild lettuce species, most likely prickly lettuce.

Date of Pictures: 10/08/21
City/Town: markham
Location & Habitat: fields and forest. I’m seeing this vine everywhere
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 Wild Cucumber, Echinocystis lobata.

Date of Pictures: 2010=08-22
City/Town: waterloo
Location & Habitat: backyard landscaping area. my backyard backs onto an empty field where many of these weed are.
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 roots are very deep and have one large root that goes very deep… over 12 inches. i dig really deep to get them out, however, it seems like the root still breaks off and some of it stays in the ground. it grows back within a few weeks. how do i kill this weed

The above plant is Canada Thistle.