What are the three main plants?
Based on these charactersitics most plants can be classified into three categories: herbs, shrubs and trees. Plants with green and tender stems are called herbs. They are usually short and may not have many branches. Some plants have the stem branching out near the base. Plants are often classified based on their size, growth habit, and life span, into three main categories: herbs, shrubs, and trees. Herbs: are usually annual or perennial plants with relatively soft stems and limited woody tissue. They die back to the ground at the end of each growing season.