Weeds in the Assiniboine Forest

This is a collection of plants that none of the other pages wanted.  Misunderstood and underappreciated, they've taken shelter on this page.  Thistles and some other plants that might generally be considered weeds can be found on the Prairie Floor page.  Milkweed and Silverweed can be found on the Wildflowers page. 

Weeds are sequenced in this order.  To a large extent, plants with similar flowers, or with other similar characteristics, are grouped together for ease of comparison.  

Bold Italic headings indicate species not listed on the Habitat Site Report.  

Dandelion-Like Flowers
Big and Bold
     Common Burdock
Big and Ugly
     Field Pennycress
     Shepherd's Purse
     Horseweed
     Costmary
     Stinging Nettle
     Biennial Wormwood
     Common Wormwood
     Giant Sumpweed
     Curly Dock
     Golden Dock
Their Mothers Never Told Them They Were Weeds
Refugees from the Vegetable Garden
     Horseradish
     Fennel

Click on Images to Enlarge

Dandelion-Like Flowers

Dandelion

Taraxacum officinale
Introduced Perennial









Perennial Sow-Thistle

Sonchus arvensis
Introduced Perennial, also known as Field Sow Thistle, Cow Sow Thistle, Gutweed, Field Milk Thistle

Also known as Field Sow-Thistle, this plant is distinct from Spiny-Leaved Sow Thistle.




Curly-Top Gumweed

Grindelia squarrosa
Native Biennial, also known as Curlycup Gumweed

At first glance, this might appear to be just another dandelion or sow thistle, but the leaves are noticeably different.

Narrow-Leaf Hawkweed

Hieracium umbellatum
Native Perennial, also known as Canadian Hawkweed, Northern Hawkweed





Scapose Hawksbeard

Crepis runcinata
Native Perennial, also known as Fiddleleaf Hawksbeard

Goat's Beard

Tragopogon dubius
Introduced Annual or Biennial, also known as Salsify, Yellow Goat;s Beard, Western Goat's Beard

Big and Bold

Common Burdock

Arctium lappa
Introduced Biennial, also known as Greater Burdock, Wild Rhubarb, Beggar's Buttons

Big and Ugly

Field Pennycress

Thlaspi arvense
Introduced Annual, also known as Stinkweed





Shepherd's Purse

Capsella bursa-pastoris
Introduced Annual, also known as Mother's Heart
 
 
This close-up shows the triangular flat fruits from which Shepherd's Purse gets its name.

Horseweed

Erigeron canadensis
Native Annual, also known as Canadian Fleabane, Coltstail, Marestail, Butterweed



Horseweed flowers, close up


Costmary

Tanacetum balsamita
Introduced Perennial, also known as Balsam Herb, Bible Leaf




Stinging Nettle

Urtica dioica
Native Perennial, also known as Common Nettle, Burn Nettle

Biennial Wormwood

Artemisia biennis
Native Biennial


Common Wormwood

Artemisia vulgaris
Introduced Perennial, also known as Riverside Wormwood, Common Mugwort, Chrysanthemum Weed, St. John's Plant





Giant Sumpweed

Cyclachaena xanthiifolia
Native Annual, also known as Rag Sumpweed





Curly Dock

Rumex crispus
Introduced Perennial, also known as Yellow Dock

Golden Dock

Rumex maritimus
Native Annual, also known as Bristle Dock, Seashore Dock

Golden Dock, with Neighbouring Sow-Thistles


Close-Up




Their Mothers Never Told Them They Were Weeds

Agrimony, Common (Sticklewort)

Agrimonia eupatoria
Introduced Perennial, also known as Sticklewort, Church Steeples




These flowers will turn into burrs by autumn.


Bur Forget-Me-Not

Lappula squarrosa
Introduced Annual, also known as Bluebur, Sheepbur, Stickseed
 

As with Agrimony, these flowers will turn into burrs by autumn.


Pineapple Weed

Matricaria matricarioides
Introduced Annual, also known as Wild Chamomile, Disc Mayweed, Rayless Mayweed




Common Ragweed

Ambrosia artemisiifolia
Native Annual, also known as Annual Ragweed, Low Ragweed, Carrot Weed


Close-Up


Common Plantain

Plantago major
Introduced Perennial, also known as Broadleaf Plantain, Greater Plantain




Prostrate Knotweed

Polygonum aviculare
Introduced Annual, also known as Doorweed, Pigweed, Birdweed, Lowgrass




Common Purslane

Portulaca oleracea
Native Annual, also known as Duckweed, Little Hogweed, Pursley





Refugees from the Vegetable Garden

Horseradish

Cochlearia armoracia
Introduced Perennial


Along the Harte Trail, east of Elmhurst


Fennel

Foeniculum vulgare
Introduced Perennial, also known as Sweet Fennel

Although I have identified this plant as fennel, it may in fact be dill.

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