I think that BRACKEN FERN - Pteridium is the worlds most common
plant. Although it could be a type of seagrass, which are flowering
plants. Or Phragmites australis which is sometimes indigenous and
sometimes a weed. The worlds most common weed could be a Cyperus.
Or a grass like Ehrharta. PAMPAS GRASS or LOVEGRASS. And when you
consider WHEAT. Fodder grass Lolium perenne. and lawn grass COUCH.
In the future it will be a invasive weed like MAPLE, PRIVET or
Camphor laurel capable of making extinct entire communities of
native plant species. DANDELION - Taraxacum. Pinus radiata. GINGER.
CROFTON. Gazania rigens. Ailanthus. Pinus nigra. Portulaca
oleracea. Ipomoea cairica. BAMBOO. Typha. WATERCRESS - Nasturtium
officianale. Arundo donax. Salvinia molesta. RICE. WATER HYACINTH.
ALLIGATOR WEED. Chenopodium album. Acacia saligna. Coffea. Rumex.
BLACKBERRY. Lantana. Hydrocotyle bonariensis. PRICKLY PEAR.
CRABGRASS. HONEYSUCKLE. AFRICAN OLIVE. PASSIONFRUIT. TOMATO.
Euphorbia peplus. Imperata cylindrica. DODDER LAUREL. Plantago
lanceolata. Acetosa sagittata. Anredera. Coreopsis. Oxalis ssp.
FLEABANE. COMMON HAWTHORN. Cirsium arvense. Lactuca serriola. Senna
pendula. Ochna serrulata. Some of these are the worlds most common
plants because they evolved particularly opportunistic
characteristics. And/or some because of mankinds naivety, ignorance
or contempt. These plants are spread by the weather and animals, if
you are growing them in your garden you are also growing them
anywhere within a waters flow, winds blow, birds flight or humans
drive from your house. Many residential, commercial and industrial
property owners are simply unwilling to take responsibility for the
control of invasive weeds on their property... Peter Napper, Dee
Why 29/11/09. please add your thoughts. And ENJOY the simple things
in life.
P.S. I kno the worlds most popular plant, but not the U.S.
Qwertyu52