Agave OBSCURA - Dark Agave, Agave obscura.
Agave is a genus of evergreen perennial herbaceous plants in the Asparagus family (Asparagaceae), including about 300 species distributed in the Caribbean islands and in arid regions of North, Central, and South America. No more than 50 species are common in cultivation.
Representatives of the genus form rosettes of fleshy leaves, often with prickly margins and sharp tips. The leaves can be wide or narrow, colored in gray-green, glaucous, or green shades, sometimes with variegated coloration. The stem, as a rule, is shortened. The plants are adapted to prolonged droughts, spreading outward with powerful roots, absorbing moisture from the surface layers of the soil and storing it in their leaves.
Flowering occurs at the age of 15-20 years, after which the plant dies. A tall flower stalk emerges from the rosette of robust leaves, bearing an inflorescence in the form of a panicle or raceme at the top, usually yellow or cream-colored. The fruits are capsules with flat seeds. After the seeds mature, the aboveground parts of the mother plant die off, and daughter offsets grow from the rhizomes.
Dark agave is a medium-sized rosette agave with stiff, elongated, lanceolate leaves up to 50-70 cm (19.7-27.6 in) long. The leaves are gray-green or glaucous with a waxy coating, armed along the edges with small hooked teeth, and ending at the apex with a stout dark terminal spine. A distinct groove often runs down the center of the leaf. The rosette forms symmetrical and dense, producing lateral offsets over time. The overall appearance of the plant is sculptural and expressive.
Flowering is observed at mature age, after several years of cultivation. The inflorescence is a tall, up to 2-3 m (6.6-9.8 ft), erect flower stalk with numerous pale green or creamy yellow tubular flowers pollinated by insects and birds. After flowering, the mother rosette dies back, but beforehand it manages to form numerous offsets.
Agave obscura was described relatively recently and is found in Mexico, predominantly in the states of Hidalgo and Puebla. The name 'obscura' translates as 'dark' and is associated with the deep green-glaucous coloration of the leaves. The species is distinguished by its compactness, cold hardiness (down to -6 °C (21 °F)), and ability to adapt to various light conditions, making it popular in collections and landscape design.