Set of Plants often considered to be weeds
A short list of some plants that often are thought to be weeds follows:
Source: real weed for sale online
- Amaranth – (“pigweed”) total twelve-monthly with copious long-lasting seeds, also an extremely edible and resilient food source
- Bermuda grass – perennial, spreading by runners, rhizomes and seeds.
- Broadleaf plantain – perennial, spreads by seeds that persist in the soil for quite some time
- Burdock – biennial
- Common lambsquarters – annual
- Creeping charlie – perennial, fast-spreading plants with long creeping stems
- Dandelion – perennial, wind-spread, fast-growing, and drought-tolerant
- Goldenrod – perennial
- Japanese knotweed
- Kudzu – perennial
- Leafy spurge – perennial, with underground stems
- Milk thistle – gross twelve-monthly or biennial
- Poison ivy – perennial
- Ragweed – annual
- Sorrel – total total annual or perennial
- St John’s wort – perennial
- Sumac – woody perennial
- Tree of heaven – woody perennial
- Wild carrot – biennial
- Wood sorrel – perennial
- Yellow nutsedge – perennial
Many invasive weeds were introduced deliberately to start with, and could have not been considered nuisances in those days, but rather beneficial.
Amaranthus, collectively referred to as amaranth, is a cosmopolitan genus of gross gross annual or short-lived perennial plants. Some amaranth species are cultivated as leaf vegetables, pseudocereals, and ornamental plants. The vast majority of the Amaranthus species are summer twelve-monthly weeds and are also often called pigweed. Catkin-like cymes of densely packed flowers grow in summer or autumn. Amaranth varies in flower, leaf, and stem color with a range of striking pigments from the spectral range of maroon to crimson and will grow longitudinally from 3 to 8 feet tall with a cylindrical, succulent, fibrous stem that’s hollow with grooves and bracteoles when mature.
There are approximately 75 species in the genus, 10 of which are dioecious and native to THE UNITED STATES with all of those other 65 monoecious species endemic to every continent from tropical lowlands to the Himalayas. Members of this genus share many characteristics and uses with members of the closely related genus Celosia.
The blades certainly are a grey-green colour and are also short, usually 2-15 cm (0.79-5.91 in) long with rough edges. The erect stems can grow 1-30 cm (0.39-11.81 in) tall. The stems are slightly flattened, often tinged purple in colour.
The seed heads are explained in a cluster of two to six spikes together at the top of the stem, each spike 2-5 cm (0.79-1.97 in) long.
It offers a deep root system; in drought conditions with penetrable soil, the key system can grow to over 2 metres (6.6 ft) deep, although majority of the root mass is significantly less than 60 centimetres (24 in) under the surface. The grass creeps along underneath which consists of stolons and roots wherever a node touches the ground, forming a dense mat. C. dactylon reproduces through seeds, stolons, and rhizomes. Growth commences at temperatures above 15 °C (59 °F) with optimum growth between 24 and 37 °C (75 and 99 °F); in winter, the grass becomes dormant and turns brown. Growth is promoted by full sun and retarded by full shade, e.g., near tree trunks.