Weeds: Birdfoot Trefoil – Lotus corniculatus Categories: A-B Broadleaf Weeds Last review date: 2026-06-05 10:46 Family: Fabaceae Cycle: Perennial Plant type: Broadleaf Birdfoot Trefoil flowers Photo by: Albert Herring CC 2.0 Biology Lotus corniculatus can be identified by its unique shaped leaves that alternate on the main stem, are trifoliate (3 terminal leaflets at the […]
Weeds: Bittercress (Shotweed, Hairy bittercress) – Cardamine hirsuta Categories: A-B Broadleaf Weeds Last review date: 2026-06-05 10:47 Family: Brassicaceae (Cruciferae) Cycle: Winter annual Plant type: Broadleaf Hairy bittercress rosette (1) Photo by: T.W. Miller Biology Little bittercress is a fall/winter-germinating annual species growing to less than five inches tall. Leaves are compound with one large […]
Weeds: Bittersweet nightshade (European bittersweet) – Solanum dulcamara Categories: A-B Broadleaf Weeds Last review date: 2026-06-05 10:48 Family: Solanaceae Cycle: Perennial Plant type: Broadleaf Bittersweet nightshade fruits Photo by: T.W. Miller Biology Bittersweet nightshade is a trailing to climbing, viny plant with stems reaching up to ten feet. The dark green leaves are alternate on […]
Weeds: Black medic – Medicago lupulina Categories: A-B Broadleaf Weeds Last review date: 2026-06-05 11:12 Family: Fabaceae (Leguminosae) Cycle: Annual Plant type: Broadleaf Black medic stem and leaves Photo by: T.W. Miller Biology Black medic is very clover-like in appearance and is sometimes called Japanese clover. Leaves are alternate on the stems and divided into […]
Weeds: Blackberry (Himalayan, Evergreen, Pacific) – Rubus spp. Categories: A-B Broadleaf Weeds Last review date: 2026-06-05 10:49 Family: Rosaceae Cycle: Perennial Plant type: Broadleaf Blackberry fruit Photo by: T.W. Miller Biology Several species of blackberries may be considered weeds. Among these are evergreen or cutleaf blackberry (Rubus laciniatus), the native dewberry or Pacific blackberry (R. […]
Weeds: Blue mustard (Purple mustard, Tenella mustard) – Chorispora tenella Categories: A-B Broadleaf Weeds Last review date: 2026-06-05 11:12 Family: Brassicaceae (Cruciferae) Cycle: Winter annual Plant type: Broadleaf Blue mustard with flowers Photo by: J.A. Kropf Biology Blue mustard is a leafy, taprooted winter annual. Plants branch primarily from the base, with some branching of […]
Weeds: Buffalobur – Solanum rostratum Categories: A-B Broadleaf Weeds Last review date: 2026-06-05 08:10 Family: Solanaceae Cycle: Annual Plant type: Broadleaf Buffalobur with flowers Photo by: D.G. Swan Biology Buffalobur is an exceptionally spiny annual plant growing about two feet high. The alternate leaves have deep, rounded lobes and are two to five inches long. […]
Weeds: Bull thistle – Cirsium vulgare Categories: A-B Broadleaf Weeds Last review date: 2026-06-05 11:14 Family: Asteraceae (Compositae) Cycle: Biennial Plant type: Broadleaf Bull thistle flower Photo by: J.A. Kropf Biology A first-year plant of bull thistle is a rosette of deeply lobed, wavy-margined leaves. The upper surface of the leaves is prickly and hairy, […]
Weeds: Buttercup, creeping – Ranunculus repens Categories: A-B Broadleaf Weeds Last review date: 2026-06-05 11:15 Family: Ranunculaceae Cycle: Perennial Plant type: Broadleaf Creeping buttercup flowers Photo by: T.W. Miller Biology Creeping buttercup is a creeping perennial plant that is usually fairly low growing. The stems are hairy and root at the nodes when they contact […]
Weeds: Butterfly bush – Buddleja davidii Categories: A-B Broadleaf Weeds Last review date: 2026-06-05 11:16 Family: Scrophulariaceae Cycle: Perennial Plant type: Broadleaf Buddleja davidii ‘Fascination’ Photo by: Ptelea; CC BY-SA 3.0 Biology Butterfly bush, Buddleja davidii, is a deciduous shrub that grows from 3 to 15 ft tall. Until only recently, this species was celebrated […]
