Mexcalmetl

*Agave horrida*, also called Mexcalmetl by [Spadefoot Nursery](https://www.spadefootnursery.com/agave/agavehorrida), is an evergreen species, according to the [Royal Horticultural Society](https://www.rhs.org.uk/plants/154746/agave-horrida/details). It forms a symmetrical solitary rosette of deep green, stiff leaves edged with large brown teeth that fade gray with age. Its bold, compact outline suits a sunny gravel garden, dry rock garden or substantial container where the sharp tips can be kept clear of paths. ## Form and landscape use The mature rosette is about 1–2 ft tall and 2–3 ft wide, according to [Spadefoot Nursery](https://www.spadefootnursery.com/agave/agavehorrida) and [V&P Nurseries](https://www.vpnurseries.com/agave-horrida-horrible-agave). The sculptural leaves make this a strong focal plant among lower, softer-textured succulents. It is monocarpic: after many years a mature rosette sends up a much taller flower stalk and then dies; the flowering structure is reported with yellow flowers, though references differ on the exact color. ## Siting Give it full sun to part shade and sharply draining, rocky or gritty soil. Avoid sites that stay wet, especially in cool weather. The RHS notes that agave sap may irritate skin. In containers, use a freely draining cactus mix and a pot with an open drainage hole. Established plants need only low to moderate supplemental water; water more during active growth and reduce it in winter. Protect from severe freezes and handle with care around the sharp marginal teeth. ## Maintenance No routine shaping is needed. Remove damaged leaves only when necessary, using gloves and eye protection. Keep the rosette open to air and do not let water collect around its base.