Weeds: Brackenfern, western – Pteridium aquilinum categories: Weeds revision date: 2022-12-17 12:00 Western brackenfern frondsPhoto by: R. Parker Family: Dennstaedtiaceae (Polypodiaceae) Cycle: Perennial Plant type: Other Biology Brackenfern grows from creeping rhizomes, which can spread the plant over a large area. The hairy rhizomes are brown and woody. Leaves (fronds) are generally triangular in outline […]
Weeds: Buffalobur – Solanum rostratum categories: Weeds revision date: 2022-12-17 12:00 Buffalobur with flowersPhoto by: D.G. Swan Family: Solanaceae Cycle: Annual Plant type: Annual 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. The leaves are prickly […]
Weeds: Bull thistle – Cirsium vulgare categories: Weeds revision date: 2022-12-17 12:00 Bull thistle flowerPhoto by: J.A. Kropf Family: Asteraceae (Compositae) Cycle: Biennial Plant type: Broadleaf 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, while the underside is […]
Weeds: Buttercup, creeping – Ranunculus repens categories: Weeds revision date: 2022-12-17 12:00 Creeping buttercup flowersPhoto by: T.W. Miller Family: Ranunculaceae Cycle: Perennial Plant type: Broadleaf 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 the soil. Leaves are also […]
Weeds: Butterfly bush – Buddleja davidii categories: Weeds revision date: 2022-12-17 12:00 Buddleja davidii ‘Fascination’Photo by: Ptelea; CC BY-SA 3.0 Family: Scrophulariaceae Cycle: Perennial Plant type: Broadleaf Biology Butterfly bush, Buddleja davidii, is a deciduous shrub that grows from 3 to 15 ft tall. Until only recently, this species was celebrated for its robust growth, […]
Weeds: Canada thistle – Cirsium arvense categories: Weeds revision date: 2022-12-17 12:00 Canada thistle leaves and flowerPhoto by: T.W. Miller Family: Asteraceae (Compositae) Cycle: Perennial Plant type: Broadleaf Biology Canada thistle is an aggressive, spreading weed. The aboveground portions of the plants die back in the winter, but resprout from perennial roots in the spring. […]
Weeds: Catchweed bedstraw (Cleavers) – Galium aparine categories: Weeds revision date: 2022-12-16 12:00 Catchweed bedstraw leaf whorlsPhoto by: T.W. Miller Family: Rubiaceae Cycle: Annual Plant type: Broadleaf 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 length. The stems […]
Weeds: Catsear, common (False dandelion) – Hypochaeris radicata categories: Weeds revision date: 2022-12-16 12:00 Common catsear rosettePhoto by: J.A. Kropf Family: Asteraceae (Compositae) Cycle: Perennial Plant type: Broadleaf Biology Common catsear, also known as false dandelion or spotted catsear, grows in a rosette, with all the leaves at the base of the plant. Roots are […]
Weeds: Chickweed, common and mouseear – Stellaria media, Cerastium fontanum ssp. vulgare categories: Weeds revision date: 2023-01-09 12:00 Common chickweed leaves and flowersPhoto by: R. Parker Family: Caryophyllaceae Cycle: Annual, Perennial Plant type: Broadleaf Biology COMMON CHICKWEED reproduces both by seeds and by many creeping stems which can root at the nodes. While the plants […]
Weeds: Clover – Trifolium spp. categories: Weeds revision date: 2022-12-16 12:00 Clover flowersPhoto by: R. Parker Family: Fabaceae (Leguminosae) Cycle: Various Plant type: Broadleaf 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 the petiole at […]
