How to identify Adam's needle (Yucca filamentosa)
Adam's needle, also known as Spoon-Leaf Yucca, Silkgrass, Adam's-Needle, Spoonleaf Yucca, Spanish Dagger, Beargrass, Bear-grass, Needle-palm, Spanish bayonet
Adam's needle displays a distinctive, mounded clump of sword-shaped, bluish-green leaves that possess curled fibers along their margins, giving it a unique texture. This evergreen shrub can reach heights of 3 to 8 feet (0.9 to 2.4 meters) and spread 3 to 5 feet (0.9 to 1.5 meters) wide. The leaves are not only tough and leathery but also end in a sharp point. Adam's needle's statuesque form makes it a striking addition to any garden landscape.
Lifespan: Perennial
Plant Type: Shrub
Leaf Type: Evergreen
Curled fibers along bluish-green leaves' margins create a unique texture.
Waxy, creamy white bell-shaped flowers on tall panicles with a mild fragrance.
Fruit transitions from green to brown, housing black seeds, distinctive for identification.
Stem supports significant height, stout, unbranched, with fibrous base, light grey to brown.
Basal rosette of stemless sword-shaped leaves with inrolled margins and thread-like filaments.
The leaves of adam's needle are stemless and form a basal rosette. They are simple, sword-shaped, with a sharply pointed apex. The margins are usually inrolled, featuring unique curly, thread-like filaments. The leaves measure up to 18 inches (45 cm) in length and 2 inches (5 cm) in width. Many cultivars exhibit bold, variegated leaves with softer tips, providing striking visual appeal.
The flowers of adam's needle are waxy, creamy white, and bell-shaped, arranged in tall panicles reaching 5-6 feet (150-180 cm) in height. Each flower measures around 2-3 inches (5-7 cm) in diameter, with a pleasant, mild fragrance. They bloom from April to June, featuring six petals that curve gracefully, creating a striking visual display. This floral arrangement makes adam's needle easily recognizable and highly distinctive.
The stem of adam's needle is characterized by its rigid and upright nature, supporting the plant's significant height of up to 5-8 feet (1.5-2.4 meters). It is stout, unbranched, and grows directly from the basal rosette of leaves. The texture is generally smooth, with a fibrous quality near the base. The color is typically a light grey to brown, adding a subtle contrast to the green foliage. Due to the plant's structure, the stem serves as a prominent feature in its overall form.
The fruit of adam's needle is oblong in shape and matures from green to brown. Each fruit measures approximately 2 inches (5 cm) in length and 3/4 inch (2 cm) in diameter. Inside, the fruit contains many black seeds. The exterior of the fruit presents a smooth texture, making it distinct and easily identifiable.
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Scientific Classification of Adam's needle
