Fastigiata

Fastigiata is a term often used in botany to describe a plant growth habit characterized by upright, closely grouped branches that grow vertically, giving the plant a narrow, columnar or pillar-like form. This habit is in contrast to plants that spread horizontally or have a more rounded, bushy appearance. The term derives from the Latin word "fastigium," meaning peak or summit, referring to the upward-reaching nature of the branches.

Many species and cultivars exhibit a fastigiate form, which can be naturally occurring or a result of selective breeding. This growth habit is often desirable in landscaping for its space-saving qualities, allowing for dense plantings or placement in narrow areas where a wider plant would not fit. Fastigiate trees and shrubs can create strong vertical lines in garden design, adding architectural interest and a sense of height. Examples of plants commonly described as fastigiate include certain varieties of Lombardy Poplar (Populus nigra 'Italica'), Italian Cypress (Cupressus sempervirens 'Stricta'), and some cultivars of beech, oak, and juniper. The upright growth can also influence light penetration and air circulation within a planting.