Weeds: Canada thistle – Cirsium arvense categories: C-E Weeds last review date: 2025-09-15 07:14 Family: Asteraceae (Compositae) Cycle: Perennial Plant type: Broadleaf Canada thistle leaves and flower Photo by: T.W. Miller Biology Canada thistle is an aggressive, spreading weed. The aboveground portions of the plants die back in the winter, but resprout from perennial roots […]
Weeds: Catchweed bedstraw (Cleavers) – Galium aparine categories: C-E Weeds last review date: 2025-09-15 07:17 Family: Rubiaceae Cycle: Annual Plant type: Broadleaf Catchweed bedstraw leaf whorls Photo by: T.W. Miller Biology Catchweed bedstraw is a weakly erect to sprawling plant from a slender taproot. Stems are weak, climbing or twining to over six feet in […]
Weeds: Catsear, common (False dandelion) – Hypochaeris radicata categories: C-E Weeds last review date: 2025-09-15 07:20 Family: Asteraceae (Compositae) Cycle: Perennial Plant type: Broadleaf Common catsear rosette Photo by: J.A. Kropf Biology Common catsear, also known as false dandelion or spotted catsear, grows in a rosette, with all the leaves at the base of the […]
Weeds: Chickweed, common and mouseear – Stellaria media, Cerastium fontanum ssp. vulgare categories: C-E Weeds last review date: 2025-09-15 07:26 Family: Caryophyllaceae Cycle: Annual, Perennial Plant type: Broadleaf Common chickweed leaves and flowers Photo by: R. Parker Biology COMMON CHICKWEED reproduces both by seeds and by many creeping stems which can root at the nodes. […]
Weeds: Clover – Trifolium spp. categories: C-E Weeds last review date: 2025-09-15 07:28 Family: Fabaceae (Leguminosae) Cycle: Various Plant type: Broadleaf Clover flowers Photo by: R. Parker Biology Clovers, depending on species, may be annuals or perennials. Typically, clovers are fairly low-growing, herbaceous plants. The leaves are divided into three leaflets which are attached to […]
Weeds: Comfrey – Symphytum officinale categories: C-E Weeds last review date: 2025-09-15 07:38 Family: Boraginaceae Cycle: Perennial Plant type: Broadleaf Comfrey bell-shaped flowers Photo by: T.W. Miller Biology Comfrey has clump-forming perennial roots with brown to black bark. The roots are thick and penetrate deep in the soil, making comfrey difficult to eradicate once established. […]
Weeds: Crabgrass – Digitaria spp. categories: C-E Weeds last review date: 2025-09-15 07:42 Family: Poaceae (Graminae) Cycle: Annual Plant type: 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 ground may root, forming mats. The flat leaf blades […]
Weeds: Creeping Jenny: Lysimachia nummularia categories: C-E Weeds last review date: 2025-09-15 07:50 Family: Primulaceae Cycle: Perennial Plant type: Evergreen Creeping Jenny flower Photo by: H. Zell Biology Lysimachia nummularia, commonly called moneywort or creeping Jenny, is a low-growing, creeping ground cover which forms a leafy mat only 2-4″ tall. Roots where leaf nodes come […]
Weeds: Dandelion – Taraxacum officinale categories: C-E Weeds last review date: 2025-09-15 08:25 Family: Asteraceae (Compositae) Cycle: Perennial Plant type: Broadleaf 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. It also grows back from roots broken […]
Weeds: Dock (Curly, Broadleaf) – Rumex spp. categories: C-E Weeds last review date: 2025-09-15 09:59 Family: Polygonaceae Cycle: Perennial Plant type: Broadleaf Broadleaf dock Photo by: T.W. Miller Biology Curly dock (Rumex crispus), also called sour dock or yellow dock, is a robust tap-rooted perennial growing two to five feet tall. Stems are erect, reddish, […]
Weeds: Dodder – Cuscuta spp. categories: C-E Weeds last review date: 2025-09-15 10:02 Family: Cuscutaceae Cycle: Annual Plant type: Parasitic Dodder entwining fuchsia stem Photo by: R.S. Byther Biology The parasitic flowering plant dodder (Cuscuta spp.) attacks living plants by entwining them in its slender stems. Dodder is characterized by its tangle of leafless, yellow […]
Weeds: Downy brome (Cheatgrass, Downy chess) – Bromus tectorum categories: C-E Weeds last review date: 2025-09-15 10:03 Family: Poaceae (Graminae) Cycle: Winter annual Plant type: Grass Downy brome – cheatgrass Photo by: J.A. Kropf Biology Downy brome is a winter annual (sometimes a summer annual) reproducing by seed. Germination typically occurs during late summer or […]
Weeds: Dwarf mistletoes – Arceuthobium spp.w categories: C-E Weeds last review date: 2025-09-15 10:10 Family: Loranthaceae Cycle: Perennial Plant type: Parasitic Dwarf mistletoe in conifer Photo by: R.S. Byther Biology Dwarf mistletoe is a parasitic plant that grows on the branches or occasionally on the trunk of a host tree. Mistletoe shoots range in color […]
Weeds: English daisy (Lawn daisy) – Bellis perennis categories: C-E Weeds last review date: 2025-08-23 12:14 Family: Asteraceae (Compositae) Cycle: Perennial Plant type: Broadleaf English daisy flowers Photo by: J.A. Kropf Biology English daisy is a low-growing plant reproducing by seed. It may also spread from the crown to form clumps. The long-stalked leaves are […]
Weeds: English ivy – Hedera helix categories: C-E Weeds last review date: 2025-09-15 10:28 Family: Cycle: Plant type: English ivy leaves Photo by: C.R. Foss Biology English ivy is a low, dark green, fast-growing evergreen vine. It establishes roots at its nodes as it creeps along the ground, or aerial rootlets as it climbs trees […]
