Perceived or actual negative attributes outweigh any potential positive benefits for the listed characteristic. Twenty Year Height, Mature Height and Crown Spread - Assumes healthy stock planted on the most appropriate sites with good to excellent weed control. Less than ideal conditions or maintenance will result in greater mortality and stunted growth. Generally, tree heights and crown spread will decrease from east to west across North Dakota. Growth Rate - Assumes optimum growing conditions.
Different species exhibit growth spurts at different stages of development.
Some grow fast immediately after planting. Some do not grow fast until several years old. Growth rates compared to 20 year heights, may not seem appropriate but in fact reflect the different growth characteristic of each plant. Landscape - Appropriate for planting in urban settings such as yards, boulevards, parks, etc. Unique color, shape or structure when viewed up close.