A wild plant growing where it is not wanted and in competition with cultivated plants
a good agency will weed out those unsuitable candidates
Shepherd's purse, Capsella bursa-pastoris.
To remove (a weed) from soil by hand; to remove a weed from (soil) by hand.
A North American annual plant, Salvia reflexa (family Lamiaceae), with aromatic greyish green leaves, naturalized in parts of Australia.
The pinkroot Spigelia anthelmia.
A weed which propagates itself chiefly by means of roots, as distinguished from one which originates from seed.
(poetic) a plant resembling rue (rare).
North American the great ragweed, Ambrosia trifida, which exudes a red sap when damaged.
The foxglove, Digitalis purpurea, or its flowers.
Frequently with the. Tobacco.
US = mad-dog skullcap.
A wild or unbroken horse; = brumby.
Australian. Any of various onion-like plants of the family Liliaceae occurring in Australia, chiefly as naturalized weeds; especially Asphodelus fistulosus, with white or pink five-petalled flowers and edible bulbs, native to southern Europe.
Ivy-leaved toadflax, Cymbalaria muralis, a southern European plant which is widely naturalized in Britain, notably on old walls in Oxford.
The compass plant, Silphium laciniatum (family Asteraceae (Compositae)), a tall, deep-rooted North American plant bearing large flowers similar to sunflowers.
= poison ivy.
Any of several North American weeds of the family Asteraceae (Compositae), especially Hymenoxys richardsonii var. floribunda and Gutierrezia sarothrae, both of which are woody plants with clusters of small yellow ray flowers.
A brown alga of the genera Fucus or Laminaria.
An alga or flowering plant that grows in rivers.
= wacky baccy.
North American term for thorn apple.
A tall perennial plant of the daisy family, which bears clusters of small purple flowers
A plant used for dyeing cloth and wool yellow or green.
A Caribbean shrub, Hedyosmum nutans (family Chloranthaceae), the leaves of which have been used to treat headaches.
Any of several small creeping North American or Caribbean swamp plants of the genus Proserpinaca (family Haloragaceae), especially P. palustris, having dimorphic leaves with the submerged ones pinnatifid, and P. pectinata, having all the leaves pinnatifid.
Any of several poisonous North American plants of the family Apiaceae (Umbelliferae), especially a water hemlock, Cicuta maculata.
North American the plant skunk cabbage, Symplocarpus foetidus.
English regional (Isle of Wight), field cow wheat, Melampyrum arvense, formerly a serious weed in parts of the Isle of Wight (now historical).
A common green freshwater alga which forms long unbranched filaments, sometimes becoming a problem in over-enriched water and garden ponds
A plant considered harmful to animals or the environment
A freshwater plant with long fronds that stream and wave in the current, especially water crowfoot
An electrically powered grass trimmer with a nylon cutting cord that rotates rapidly on a spindle
An aquatic plant, Alternanthera philoxeroides, with small white flowers on long stems, native to South America but introduced elsewhere and often regarded as an invasive weed.
Any of several plants belonging to or formerly included in the genus Pyrola (family Ericaceae) and used in the treatment of rheumatism; especially the pipsissewa, Chimaphila umbellata.
A North American milkweed with bright orange flowers which are attractive to butterflies
A small mayweed with a smell resembling that of pineapple, having flowers that lack ray florets
Wintergreen (genus Pyrola).
An invasive and noxious vine, native to Asia, that has downward-pointing barbs on the stem and the underside of leaves. It is considered an ecological threat in the eastern US
Water hyacinth, Eichhornia crassipes, a serious weed of waterways in the southern United States.
A hawkweed with purple-veined leaves, Hieracium venosum, occurring in open woods in the eastern U.S.
Any plant of the genus Ptilimnium (formerly called Discopleura) (family Apiaceae (Umbelliferae)).
Remove an inferior or unwanted component of a group or collection
An aromatic annual herb of the parsley family, with fine blue-green leaves and yellow flowers. The leaves or seeds are used for flavouring and for medicinal purposes