C-E

Weeds: Canada thistle

Weeds: Canada thistle Categories: Broadleaf C-E Weeds Last review date: 2026-07-08 07:27 Scientific name: Cirsium arvense Family: Asteraceae (Compositae) Cycle: Perennial Plant type: Broadleaf Other Common Names: Creeping Thistle, Field Thistle, Swamp Thistle, Thistle Canada thistle leaves and flower Photo by: T.W. Miller Biology Canada thistle is an aggressive, spreading weed. The aboveground portions of […]

Canada thistle leaves and flower.

Weeds: Catchweed bedstraw

Weeds: Catchweed bedstraw Categories: Broadleaf C-E Weeds Last review date: 2026-07-08 07:48 Scientific name: Galium aparine Family: Rubiaceae Cycle: Annual Plant type: Broadleaf Other Common Names: Cleavers, Goosegrass, Stickyweed, Sticky willy, Velcro plant Catchweed bedstraw leaf whorls Photo by: T.W. Miller Biology Catchweed bedstraw is a weakly erect to sprawling plant from a slender taproot. […]

Catchweed bedstraw leaf whorls close-up.

Weeds: Catsear, common

Weeds: Catsear, common Categories: Broadleaf C-E Weeds Last review date: 2026-07-08 07:48 Scientific name: Hypochaeris radicata Family: Asteraceae (Compositae) Cycle: Perennial Plant type: Broadleaf Other Common Names: California Dandelion, False Dandelion, Flatweed, Frogbit, Gosmore, Hairy Cat’s Ear, Rough Cat’s Ear, Spotted Catsear Common catsear rosette Photo by: J.A. Kropf Biology Common catsear, also known as […]

Common catsear in bloom.

Weeds: Chickweed, common

Weeds: Chickweed, common Categories: Broadleaf C-E Weeds Last review date: 2026-07-08 09:33 Scientific name: Stellaria media and Cerastium holosteoides Family: Caryophyllaceae Cycle: Annual, Perennial Plant type: Broadleaf Other Common Names: Birdweed, Chickenwort, Chickweed, Starweed, Starwort, Winterweed, Mouseear Common chickweed leaves and flowers Photo by: R. Parker Biology COMMON CHICKWEED reproduces both by seeds and by […]

Common chickweed leaves and flowers.

Weeds: Clovers

Weeds: Clovers Categories: Broadleaf C-E Weeds Last review date: 2026-07-08 07:57 Scientific name: Trifolium spp. Family: Fabaceae (Leguminosae) Cycle: Various Plant type: Broadleaf Other Common Names: White Clover, White Sweet Clover, Crimson Clover, Purple Clover, Red Clover, Pussy clover, Rabbits-foot Clover, Stone Clover Clover flowers Photo by: R. Parker Biology Clovers, depending on species, may […]

White clover patch.

Weeds: Comfrey

Weeds: Comfrey Categories: Broadleaf C-E Weeds Last review date: 2026-07-08 08:00 Scientific name: Symphytum officinale Family: Boraginaceae Cycle: Perennial Plant type: Broadleaf Other Common Names: Black wort, Boneset, Bruise wort, Comfrey, Consound, Cultivated Comfrey, Knitbone, Quaker Comfrey, Slippery-Root Comfrey bell-shaped flowers Photo by: T.W. Miller Biology Comfrey has clump-forming perennial roots with brown to black […]

Comfrey bell-shaped flowers.

Weeds: Crabgrass

Weeds: Crabgrass Categories: C-E Grasses Weeds Last review date: 2026-07-08 08:04 Scientific name: Digitaria spp. Family: Poaceae (Graminae) Cycle: Annual Plant type: Grass Other Common Names: Finger Grass, Crop Grass Crabgrass Photo by: R. Parker Biology Large crabgrass (Digitaria sanguinalis) may reach up to two feet tall but is often prostrate. Stems lying along the […]

Crabgrass against a blue background.

Weeds: Creeping Jenny

Weeds: Creeping Jenny Categories: C-E Evergreen Weeds Last review date: 2026-07-08 08:37 Scientific name: Lysimachia nummularia Family: Primulaceae Cycle: Perennial Plant type: Evergreen Other Common Names: Creeping Joan, Creeping Yellow Loosestrife, Moneywort, Running Jenny, Wandering Jenny, Wandering Sailor Creeping Jenny flower Photo by: H. Zell Biology Lysimachia nummularia, commonly called moneywort or creeping Jenny, is […]

Creeping Jenny flower.

Weeds: Dandelion

Weeds: Dandelion Categories: Broadleaf C-E Weeds Last review date: 2026-07-08 08:13 Scientific name: Taraxacum officinale Family: Asteraceae (Compositae) Cycle: Perennial Plant type: Broadleaf Other Common Names: Lion’s Tooth Common dandelion with flowers Photo by: J.A. Kropf Biology The common dandelion is a persistent taprooted plant reproducing by seeds and by short shoots from the crown. […]

Common dandelion flower and seed heads.

Weeds: Dock

Weeds: Dock Categories: Broadleaf C-E Weeds Last review date: 2026-07-08 08:26 Scientific name: Rumex spp. Family: Polygonaceae Cycle: Perennial Plant type: Broadleaf Other Common Names: Dock Weed, Curly Dock, Yellow Dock, Bloody Dock, Sorrel Broadleaf dock Photo by: T.W. Miller Biology Curly dock (Rumex crispus), also called sour dock or yellow dock, is a robust […]

Broadleaf dock.