Plant library · Succulents & Cacti
Yucca filamentosa
Adam’s needle yucca is an evergreen, spiky rosette that holds its place in the plan all year, then sends up tall white flower spikes from late spring into early summer. At about 5 feet tall in bloom and 3 feet wide, it creates a strong vertical accent without needing a deep planting bed. Use it where bold foliage and drought-ready structure are more useful than soft, fill-in planting.
Place Adam’s needle at the front-to-middle edge of a sunny xeric border, on a dry bank, or beside a patio where its upright silhouette can be seen from a distance. Give the rosette open space rather than tucking it into a densely planted mixed bed. Its evergreen form is especially useful as a fixed anchor near gravel, stone, walls, and other hard-edged features, while the flower spike adds a temporary taller layer above the planting.[1][2]
Set plants 3 feet apart, center to center. That matches the roughly 3-foot mature spread, so neighboring rosettes can meet visually without relying on overlap. Keep the planting line back from narrow walks and path corners: the pointed leaves need a clear buffer for passing legs, hands, and routine bed access. In a row, allow room to approach each plant from the open side for cleanup and dividing offsets if the clump expands.[1][2]
Reserve full sun and a dry planting position for this yucca. Very low water needs make it better suited to beds that are not regularly irrigated than to lush borders receiving frequent summer watering. Well-drained soil is important, so use raised ground, a slope, or a gravelly planting zone where water does not linger around the crown.[1][2]
The evergreen rosette remains in the layout through winter, so do not treat its 3-foot footprint as vacant after flowering. Late spring to early summer brings the tallest moment, when white flower spikes rise above the basal foliage. Position shorter plants far enough forward that they will not hide the rosette, and leave overhead space for the bloom display rather than placing it beneath low branches or projecting structures.
The stiff, sharply pointed foliage is best kept out of tight circulation zones, children’s play areas, and the immediate edge of frequently used paths. Avoid crowding it beside low plants that need regular deadheading or weeding, since close hand access becomes awkward around the rosette. A small colony can develop from basal offsets over time, so leave expansion room or use a defined edge to contain its footprint.[1][2]
Editorial content updated 2026-07-20.