A useful weed plan starts with identification. Annual seedlings, deep-rooted perennials, invasive vines, and native wildflowers need different decisions, and not every unwanted plant needs a herbicide. Use the photographs and descriptions below as a starting point, then confirm uncertain plants with a regional extension service. Avoid tasting plants to identify them, and keep clear of species with irritating sap or oils.
Bermudagrass
Bermudagrass, Cynodon dactylon, is a useful warm-season turf in some regions and a persistent invader in others. It spreads through surface runners and underground rhizomes. Removing visible blades alone leaves the spreading system behind. Where it invades a bed, remove or suppress regrowth consistently and prevent runners from crossing the edge. Match lawn management to the grass species rather than treating every patch as a weed.
Field bindweed
Field bindweed, Convolvulus arvensis, has twining stems, arrow-shaped leaves, and small white or pale pink funnel flowers. It is distinct from ornamental Ipomoea morning glories. Its persistent underground system can regrow after shoots are removed. Repeated removal before growth replenishes reserves is more useful than a one-time pull; cultivating established patches can distribute root fragments.
Oriental bittersweet
Oriental bittersweet, Celastrus orbiculatus, is a woody climbing vine that can overtop and damage trees. Compare the position of its fruit clusters with native American bittersweet before removal; identification can be difficult. Remove seedlings early. Established vines need a planned approach, and dead vines high in a tree should not be yanked down where falling material could cause injury.
Black medic
Black medic, Medicago lupulina, has three leaflets, small yellow flower clusters, and seed pods that darken as they mature. It can resemble clover at a glance. Remove small plants before seeds develop and address gaps where it establishes. Do not assume its presence alone proves a particular soil deficiency; use soil testing before making fertility changes.
Common chickweed
Common chickweed, Stellaria media, forms low mats with opposite leaves and small white flowers whose deeply split petals can look more numerous than they are. It often thrives during cool, moist conditions. Pull or hoe young plants before seed capsules mature, removing rooted pieces and checking for another flush of seedlings. Dense mats can conceal small desirable plants.
Clover
White clover, Trifolium repens, has three leaflets and rounded white flower heads. It may be intentionally retained in a mixed lawn, so decide whether removal is necessary. Wood sorrel, Oxalis species, is a different plant, often with heart-shaped leaflets and yellow flowers. If clover is unwanted, remove small patches and improve suitable turf cover rather than assuming all three-leaflet plants are interchangeable.
Crabgrass
Common lawn crabgrasses are summer annual Digitaria species with branching, often spreading stems and finger-like seed heads. Preventing seed production and maintaining suitable dense turf help reduce future plants. Preemergence treatments and products for existing weeds serve different purposes, and many interfere with lawn reseeding. See our crabgrass identification and control guide before choosing a treatment.
Creeping Charlie: identification
Creeping Charlie, also called ground ivy, is Glechoma hederacea, a perennial mint relative with rounded, scalloped leaves, square stems, and small purple flowers. Creeping stems root as they spread, so a small patch can become a mat. Its common names refer to the same plant, not separate species. Confirm the identification before treating other low-growing purple-flowered plants.
Curly dock
Curly dock, Rumex crispus, begins as a rosette of elongated leaves with wavy margins and later sends up tall stems with seed clusters that turn brown. Its substantial taproot can support regrowth. Dig young plants with the crown and as much root as practical, and remove seed stalks before they mature. Continue checking established sites rather than relying on one cut.
Dandelion
Dandelions have a basal rosette of toothed leaves, yellow flower heads, and familiar white seed heads. A hollow, leafless flower stalk helps distinguish them from some lookalikes. Lift the crown and taproot with a weeding tool if removal is desired. Root pieces can regrow, and windborne seed can arrive later. A few plants in a mixed lawn need a different decision from seedlings crowding a vegetable bed.
Dwarf mallow
Dwarf or common mallow, Malva neglecta, has rounded, shallowly lobed leaves and small pale flowers followed by wheel-like fruits. It is easier to remove while young, before its root becomes firmly established. Loosen soil rather than snapping the stem at ground level. Keep disturbed spaces covered with suitable planting or mulch to reduce new seedlings.
Garlic mustard
Garlic mustard, Alliaria petiolata, usually forms a low rosette before producing a taller flowering stem with small white four-petaled flowers. It is invasive in many North American woodlands. Follow regional advice for removal and disposal, especially once seed pods begin developing. Clean soil and seeds from footwear and tools before moving between sites; repeated monitoring is needed where a seed bank has built up.
Ground ivy: control and follow-up
For the same plant identified above as creeping Charlie, lift creeping stems as well as rooted nodes. Small fragments can establish again, so revisit the patch. Improve suitable turf cover where feasible, but do not heavily prune a healthy tree merely to dry a lawn. If using a treatment, confirm it is labeled for ground ivy and the surrounding turf. University of Minnesota Extension explains management options.
Giant hogweed
Giant hogweed, Heracleum mantegazzianum, is a large carrot-family plant with deeply cut leaves, huge white flower clusters, and stout stems bearing purple blotches and coarse hairs. Sap on skin exposed to sunlight can cause serious injury. Do not touch, cut, mow, or use a string trimmer on a suspected plant. Keep people away and contact the appropriate local authority. New York’s environmental agency provides identification and response guidance.
Horsetail
Horsetails, Equisetum species, have jointed stems and reproduce by spores as well as persistent underground growth. Some have whorled branches; others resemble upright, segmented reeds. Repeated removal can limit growth, but pulling shoots does not remove the underground system. Avoid spreading fragments through cultivation, and seek species-specific advice for an established patch.
Japanese knotweed
Japanese knotweed, Reynoutria japonica, forms upright bamboo-like canes with alternate broad leaves and pale flower clusters. It is not a vine or a true bamboo. Rhizome and stem fragments can spread an infestation when soil or waste is moved. Identify it before digging, and arrange appropriate control and disposal. See our Japanese knotweed guide.
Jewelweed
Spotted jewelweed, Impatiens capensis, is a North American native annual with succulent stems and orange, spotted flowers in moist habitats. It can self-sow freely, but it is not automatically an invasive plant requiring eradication. If seedlings crowd a bed, remove extras before seed capsules mature. Do not rely on a wild plant preparation to treat poison-plant exposure.
Kudzu
Kudzu, Pueraria montana var. lobata, is a vigorous perennial vine with three broad leaflets per leaf. It can cover vegetation and structures, and rooted nodes and crowns make established patches persistent. Control requires repeated attention to the surviving crowns, not simply cutting visible vines once. Seek regional invasive-plant guidance before managing a large area or using grazing animals.
Lambsquarters
Common lambsquarters, Chenopodium album, often has triangular or diamond-shaped leaves with a pale, mealy coating on young growth. It is a prolific annual seeder in disturbed soil. Remove young plants before the small flower and seed clusters mature, and monitor newly disturbed beds. This identification summary is not sufficient to establish whether a wild plant is safe to eat.
Field madder
Field madder, Sherardia arvensis, is a small plant with narrow leaves in whorls and tiny pink to lilac flowers. It resembles some bedstraws but belongs to a different genus. Pull or cultivate seedlings before seed develops. In turf, improve the growing conditions appropriate to the lawn rather than adding fertilizer solely because this weed is present.
Black nightshade and lookalikes
Black nightshades form a difficult group of closely related Solanum species. Small white star-shaped flowers and clusters of dark berries can help recognition, but appearance alone does not establish safety. Do not taste berries or leaves to identify them, and keep them away from children and pets. UC IPM notes identification difficulties and potentially toxic compounds. Remove unwanted seedlings before fruit dispersal.
Nutsedge
Nutsedges are Cyperus species, not ordinary lawn grasses. Upright leaves and often triangular stems help distinguish them, while underground tubers can sustain repeated regrowth. Purple and yellow nutsedge differ in details and distribution. Removing tops before seed is not enough to eliminate an established tuber system. Confirm the species and seek advice appropriate to the lawn or bed before treating.
Pigweed
Pigweeds include several Amaranthus species. Redroot pigweed, A. retroflexus, has broad leaves and dense, bristly-looking flower clusters, but young plants can be difficult to separate from relatives. Remove seedlings before seed production and recheck the area. Do not assume every pigweed has the same herbicide susceptibility; resistance is a significant concern in some populations.
Broadleaf plantain
Broadleaf plantain, Plantago major, has a ground-level rosette with several prominent curved veins along each broad leaf. Slender upright spikes carry flowers and seeds. Lift the crown before seed matures and address compacted or thin turf where appropriate. Our plantain identification guide compares it with lookalikes and explains follow-up.
Poison ivy
Poison ivy commonly has three leaflets and can grow as a vine or shrub, depending on the species. Its irritating urushiol can remain on contaminated tools, clothing, and dead material. Avoid touching a suspected plant, and never burn it. Past exposure without a rash does not guarantee future protection. Seek confirmed identification and an appropriate removal plan.
Poison sumac
Poison sumac, Toxicodendron vernix, is a wet-habitat shrub or small tree with compound leaves usually bearing 7–13 smooth-edged leaflets. Pale fruit clusters differ from the red clusters of many other sumacs. It contains urushiol and must not be burned. See our poison sumac identification and exposure guide for distinguishing features and medical sources.
Poison oak
Atlantic and Pacific poison oaks are Toxicodendron species with variable, often lobed leaflets and irritating urushiol. They do not need to resemble a true oak tree. Avoid handling suspected plants and keep contaminated material out of burn piles. A photograph-based confirmation from a regional expert is safer than touching leaves to compare texture.
Pokeweed
American pokeweed, Phytolacca americana, develops large leaves, substantial stems, and drooping clusters of dark berries. It is native in parts of North America but can be unwanted near paths or play areas. The plant is toxic; wildlife eating its fruit does not establish human or pet safety. Remove seedlings early where needed, and check established plants for regrowth from the large surviving root.
Common purslane
Common purslane, Portulaca oleracea, has fleshy leaves, spreading stems, and small yellow flowers. Remove unwanted plants before seed matures and take care with pieces left on moist soil, which may continue growing. Do not confuse it with prostrate spurges or use this short description as a foraging identification. Clearing only mature plants leaves the seed bank behind.
Ragweed
Common ragweed, Ambrosia artemisiifolia, has deeply divided leaves and inconspicuous greenish flower spikes. Its windborne pollen contributes to seasonal allergies, while showier goldenrod nearby is often mistaken for the source. Remove young unwanted plants before flowering and seed production, with suitable precautions for sensitive people. Our ragweed guide explains identification, related species, and follow-up.
Shepherd’s purse
Shepherd’s purse, Capsella bursa-pastoris, starts as a rosette and develops small white flowers followed by distinctive flattened, heart-like seed pods. It often appears during cool conditions in disturbed ground. Pull or hoe young plants before the pods mature and revisit the bed for later seedlings. Its common name describes the pod shape, not a single reliable leaf shape.
Spotted spurge
Spotted spurge, Euphorbia maculata, makes low mats with small opposite leaves, often marked by a reddish spot. The sap can irritate skin and eyes, so wear gloves and avoid breaking stems unnecessarily. Pull small plants before seed develops and remove rooted pieces. Do not taste it or assume every low, red-stemmed weed is purslane.
Stinging nettle
Stinging nettles have hairs that can cause painful skin contact. Urtica includes plants with different origins and local status, including native North American forms, so not every nettle patch is an introduced invader. Where removal is needed, wear protective gloves and clothing and address the persistent spreading root system. Do not handle a suspected plant bare-handed to test whether it stings.
Thistles
Thistle is a broad common name covering native and introduced plants with spiny foliage and clustered flower heads. Some are annual or biennial plants; others spread through persistent roots. Confirm the species before removing a native wildflower or choosing control. Prevent seed production where removal is needed, but recognize that cutting flowers alone will not eliminate a root-spreading perennial.
