- Agave americana
Century plant has no stem. Its thick and massive gray-green leaves originate from a basal rosette. The leaves get up to 6´ long and 10" wide, and have sharp spines on the margins and tips. The margin spines are recurved like fishhooks and the tip spines can be more than an inch long. The flower stalk is branched, 20-40´ tall, and bears large (3-4") yellow-green flowers. Popular cultivars are 'Marginata' with yellow margins on the leaves, 'Mediopicta' with a broad yellow band down the center of each leaf, and 'Striata' with stripes.