The foliage and seed heads of showy ornamental grasses help to extend the perennial's garden season through winter. Roots grow deep into the ground, making the plants drought tolerant. Flowers are usually feathery or plumelike and feature an awn, or a barbed appendage, that is often quite long. Moving in the wind, grasses add vitality to the garden scene.
Generally, the bigger the number, the bigger the price, the bigger the plant.
Plants with a number sign (#) followed by a number are roughly equivalent to gallon pot sizes (i.e. #2 = 2 gallon, #3 = 3 gallon and so on). These plants are sold in containers.
Plants with a height (i.e. 5-6') indicate an estimate of the current height of the plant.
Plants measured in inches (i.e. 2.5") indicate the caliper (trunk width) of the plant.
Plants measured by caliper (inches) are generally larger than plants measured in height (feet).
Plants with B&B in the size are sold as balled and burlap (not in a container).
For more information, please see this video that will show you examples and tips on selecting trees and shrubs.