Accidentally, intentionally, and vicariously are ways in which people can spread seeds. Accidents happen when clothing and footwear catch seeds as people ambulate through home- and land-scapes whereas intent and third-partying will be involved when people respectively cultivate plants and encourage fruit-eating, seed-dispersing wildlife.
A gardener may view a weed as any plant that's in the wrong place at the wrong time. But a stricter definition is a plant whose value to people is forgotten or unknown. And in that sense, the plant resorts to all means to reproduce: seeds, cuttings, below ground roots and rhizomes, above ground stolons.
This question doesn't really make sense but I see where you are coming from. If it is spread by cuttings or bits that break off it is called "spread herbaciously"Rhizomes can be called runners and when it is growing from the root of another tree it is called a SUCKER, really it is. Most weeds are spread by naive people or birds that eat the seed then excrete them elsewhere.
The proper configuration of heat, light, moisture, and nutrients is the way that weeds germinate. Non-weedy and weedy plants all need to have certain atmospheric and soil conditions in order to grow through their life cycles and natural histories. Weedy plants tend to have greater tolerances in terms of high or low supplies of air, cold, contaminants, disruptions, disturbances, heat, humidity, light, moisture, nutrients, pollution, shade, space, and stress.
Control strategies and rhizomes, roots, seeds and stolons are ways whereby weeds disperse. The first option disperses weeds in the sense that they are caused to vanish by such treatments as removal, rototilling, solarizing and weedkilling. The second option disperses weeds in the sense that they thrive because of multiple ways of taking over the immediate area.
Human intervention, water flow, wildlife dispersal and wind currents are ways that seeds of weeds spread.
1. by wind
2.by animal
3.by water
* wind * insects * water * birds
To propagate is to increase and spread by means of reproduction.
Absence of controls and dispersal, especially by multiple reproduction means, wildlife and wind describe why there are weeds. Weeds may be described as plants whose reproduction means involve multiple modes, such as sexually and vegetatively and whose value is non-existent, underappreciated or unknown. Controlled burns, extreme cutbacks and herbicidal schedules tend to control the most recalcitrant weed within two or three years.
When I link sunlight and reproduction ( I'm only in 6th grade, so don't rely on my answer) I usually think of weeds and plants. They need sunlight to grow. If you give enough sunlight, tey will eventually spread to any given area. That's all I know
Well-fertilized, well-watered soils out of sync with mulching and weeding schedules explain weeds choking out young corn plants in a garden. The nitrogen in nitrogen-phosphorus-potassium fertilizers lets whatever is growing on, over or under the soil flourish. Rain and wind spread weeds, whose multiple reproduction means include fragments, rhizomes, roots, seeds and stolons and let unintended plants take over.
reproduction
Human intervention, water flow, wildlife dispersal and wind currents are ways that seeds of weeds spread.
Weed is spread in Australia by being transported in livestock and fodder as well as being planted in some places.
Reproduction. They reproduce
Asexual reproduction means that animals or plants only have to have one of their species, as sexual reproduction means that they (or we) have to find someone of the opposite gender.
the flower because it has nector bees eat necto and spread it on the ground to make more seeds whitch means more plants
magic
Barriers, bulldozers, controls, fires, mulches and row covers appear among the reasons why weeds do not spread from one farmer's land to another's. Weeds can grow by such reproductive means as rhizomes, roots, seeds and stolons. Bulldozing and fire control root and root-like expansions whereas barriers, non-organic and organic mulches, organic and synthetic treatments and row covers obstruct dispersal of seeds by weather, wildlife and wind.