Tall woody plants
Tall woody plants is a general cover category consisting of tall woody canopy cover of greater than 25 percent. Tall plants are 4 meters (about 13 feet) or more tall, usually single-stemmed trees. The distinction between tall (> 4m) and short (< 4m) is made according to current conditions, not potential. Thus, a 3-meter-tall Douglas-fir is a short woody plant.