Are broad leaved plants with top growth that dies back each year. Most forbs have net veins in the leaves, but a few, such as bracted spiderwort, have parallel veins. Broadleaf weeds and wide flowers are kinds of forbs. Some forbs are classified as weeds because they grow where they are not wanted. Native legumes are also a special kind of forb that can accumulate nitrogen with the aid of bacteria on the roots. This nitrogen becomes available for plant growth and to enrich to soil.
Flowering herbaceous plants that are not grasses and sedges. As grasses and sedges do produce (relatively inconspicuous) flowers, the term "forbs" is often used (instead of "flowering plants") to specify the plants with conspicuous flowers the grow among the grasses in a meadow or prairie. Technically, this use of the term excludes small shrubs (such as leadplant, Amorpha canescens) that may grow among the grasses and forbs, produce flowers, and have a form similar to herbaceous plants.
A forb is not shaped like a grass, tree or bush. Like grasses, forbs can survive long periods without water. Grasses and forbs of the prairie have long roots so they can absorb a lot of water. Leaves of forbs are wider than those of grasses. The most common prarie forbs are wildflowers.