How to identify Weak-leaf yucca (Yucca flaccida)
Weak-leaf yucca, also known as Adam's needle, Beargrass, Flaccid leaf yucca
Weak-leaf yucca is an evergreen shrub characterised by its rosettes of spear-shaped, tough leaves, which can reach lengths of up to 30 inches (76 cm). The leaves emanate from mostly subterranean stems. Its foliage radiates from the plant's center and can be identified by their sword-like appearance. The plant thrives in well-drained, sandy or rocky soils and displays resilience in poor soil conditions. It has a robust constitution that is adaptable to various environmental factors.
Lifespan: Perennial
Plant Type: Herb
Leaf Type: Evergreen
Rosettes of spear-shaped leaves up to 30 inches (76 cm) long.
Distinctive bell-shaped flowers, creamy white, with a mild fragrance.
Dry capsule fruit, oblong, splitting into three sections, releasing black seeds.
Sword-like green leaves, floppily recurved, with thread-like fibers along the margin.
Subterranean, thick fleshy stems aiding in water storage and nutrient absorption.
Weak-leaf yucca leaves are sword-like, measuring 1 to 1.7 feet (30 to 51 cm) in length. These leaves bend downward and often exhibit thread-like fibers along the margin. The outer leaves recurved, or bend back on themselves, resulting in a distinctive floppy appearance. They have a tough texture and are typically green, providing a unique identification feature for weak-leaf yucca.
The flowers of weak-leaf yucca are borne on a striking stalk that can reach heights of 3 to 8 feet (90 to 240 cm). These blooms form a loose cluster and possess a distinctive bell shape. Each flower, typically about 2 to 3 inches (5 to 7.5 cm) in length, exhibits a creamy white color. The petals are smooth with a slight downward curve, and the flowers emit a mild, pleasing fragrance. Blooming primarily in late spring to early summer, they create a spectacular display.
The stems of weak-leaf yucca are subterranean, growing beneath the earth's surface. These underground stems are typically thick and fleshy, aiding in water storage and nutrient absorption. They lack visible branching and extend horizontally underground. The texture is smooth, and they are pale brown in color. These stems help the plant survive in dry conditions by storing moisture and reserving energy, making them a crucial feature for identification.
The fruit of weak-leaf yucca is a dry capsule with an oblong shape, characteristic of its genus. When mature, it typically measures 2-4 inches (5-10 cm) in length. The surface of the capsule is firm and may exhibit a light brown to tan color, often blending with the surrounding foliage. Upon reaching full maturity, the capsule may split open into three distinct sections, releasing numerous small, flat black seeds. The texture of these seeds contrasts with the smooth interior of the capsule. This distinctive dry fruiting body is an identifying feature of weak-leaf yucca.
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Scientific Classification of Weak-leaf yucca
