Agave asperrita is a succulent that forms rosettes of thick, blue-gray, deeply channeled leaves with large teeth along the margins and ending in a long dark brown spine. It grows up to 4 feet (1.2 m) tall. Leaves are up to 3 feet (90 ct) long and up to 6 inches (15 cm) wide. Mature rosette produces up to 20 feet (6 m) tall spike with peduncles, each bearing many bright yellow flowers.
In summer, the plant must be watered abundantly, but the soil between the irrigations must completely dry out. In winter, watering is rare; water needs succulent water so that the leaves do not wrinkle.
When you grow agave in pots, you must remember that they require at least six hours of sun a day. The pot should have a hole in the bottom and drain well, and ideally should contain one-half garden soil, potting mix or compost and one-half gravel, pumice or sharp sand to encourage drainage. Since the available nutrients are confined to the pot, sprinkle a light layer of slow-release fertilizer around the base of the plants at the beginning of the spring growing season. Slow release fertilizers are coated to release plant nutrients over a period of weeks rather than days.
Remove your potted agave from its pot and prune away any damaged or diseased roots. Soft, mushy-looking roots can be pruned away. Leave roots that have white or yellow tips because these are where new root growth will emerge. The best time to prune is in late summer and early fall
