Tree silhouette material with trees and grass

>This article is about the biological organisms known as trees. For other meanings of the word see tree (disambiguation). A tree can be defined as a large, perennial, woody plant. Though there is no set definition regarding minimum size, the term generally applies to plants at least 6 m (20 ft) high at maturity and, more importantly, having secondary branches supported on a single main stem or trunk (see shrub for comparison). Compared with most other plant forms, trees are long-lived. A few species of trees grow to 100 m tall, and some can live for several thousand years. See more at Wikipedia.org...

>This article is about plants; for other uses of the term, see Grass (disambiguation) Grass generally describes a monocotyledonous green plant characterized by slender leaves, called blades, which usually grow arching upwards from the ground. Plants that are botanically regarded as "true" grasses fall into the flowering plant family, Poaceae. However, there are other plants outside this plant family that have similar appearance, and are commonly referred to as grasses, or have "grass" as part of their name. These include:China grass, more commonly known as Ramie (Boehmeria nivea), a nettle grown for bast fibres, in the Family UrticaceaeDitch grass or Wigeon grass (Ruppia maritima) in the Family RuppiaceaeFish grass (Cabomba caroliniana), a freshwater aquaticGoosegrass (Galium aparine)Mondo grass or Lily turf (Ophiopogon japonicus), an Asian ornamental ground coverNutgrass, a common lawn pest (Cyperus rotundus) in the Family CyperaceaePepper grasses (Lipidium spp.) in the family BrassicaceaeSawgrass, abundant in sub-tropical marshlands (Cladium spp.) in the Family CyperaceaeScurvy-grass (Cochlearia species) in the Family BrassicaceaeScurvy-grass Sorrel (Oxalis enneaphylla) in the Family OxalidaceaeSeagrasses, including Eel grass (Zostera spp.)"Sleeping grass" (Mimosa pudica) a legume (Family Fabaceae) and lawn weedXyridaceae, known as the yellow-eyed grass family See more at Wikipedia.org...