Plant ecology is a subdiscipline of ecology which studies the distribution and abundance of plants, the effects of environmental factors upon the abundance of plants, and the interactions among and between plants and other organisms.
Shrub
A shrub or bush is a small to medium-sized woody plant.
Tree
In botany, a tree is a perennial plant with an elongated stem, or trunk, supporting branches and leaves in most species.
Alpine plant
Alpine plants are plants that grow in an alpine climate, which occurs at high elevation and above the tree line.
Carnivorous plant
Carnivorous plants are plants that derive some or most of their nutrients (but not energy) from trapping and consuming animals or protozoans, typically insects and other arthropods.
Ornamental plant
Ornamental plants are plants that are grown for decorative purposes in gardens and landscape design projects, as houseplants, for cut flowers and specimen display.
Plant breeding
Plant breeding is the art and science of changing the traits of plants in order to produce desired characteristics.
Herbicide
Herbicide(s), also commonly known as weedkillers, are chemical substances used to control unwanted plants.
Vine
A vine (Latin vīnea "grapevine", "vineyard", from vīnum "wine") in the narrowest sense is the grapevine (Vitis), but more generally it can refer to any plant with a growth habit of trailing or scandent (that is, climbing) stems or runners.
Weed
A weed is a plant considered undesirable in a particular situation, "a plant in the wrong place".
Cryptogam
A cryptogam (scientific name Cryptogamae) is a plant (in the wide sense of the word) that reproduces by spores, without flowers or seeds.
Plant rights
Plant rights are rights to which plants may be entitled.
Polysporangiophyte
Polysporangiophytes, also called polysporangiates or formally Polysporangiophyta, are plants in which the spore-bearing generation (sporophyte) has branching stems (axes) that terminate in sporangia.