Dense Shrub

Density

Density is the ratio of a substance's mass to its volume. The symbol most often used for density is ρ, although the Latin letter D can also be used: where ρ is the density, m is the mass, and V is the volume. In some cases, density is loosely defined as its weight per unit volume, although this is scientifically inaccurate – this quantity is more specifically called specific weight.

Shrub

A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple stems and shorter height, less than 6–10 m (20–33 ft) tall, the cutoff point varying within this range for any one species due to suitability of growing conditions in any one environment. Some tree species never achieve their mature height because of hostile, less than ideal growing conditions in certain areas, and can resemble shrub-sized plants. Small shrubs, less than 2 m (6.6 ft) tall are sometimes termed as subshrubs. Some shrub species only last about five years in good conditions, while others, usually larger and more woody, live beyond 70 years; on average, shrub species die after about eight years.

dense

Adjective

1. Having relatively high density.
2. Compact; crowded together.

Noun

1. A thicket.

shrub

Noun

1. A woody plant smaller than a tree, and usually with several stems from the same base.

Verb

1. To lop; to prune.
2. To plant a shrub in a yard, garden, etc.; to prune a bush or other plant into a shrub.