Jardín Botánico Exterior, Botanical garden in Coyoacán, Mexico

Jardín Botánico Exterior is the outdoor section of the botanical garden of UNAM's Institute of Biology, in Coyoacán, Mexico City. Its 12.6-hectare grounds hold about 1,600–1,850 native Mexican species in 15 collections, arranged in arid, semi-arid, temperate and warm-humid zones. The Faustino Miranda greenhouse keeps a warm, humid environment for lowland rainforest plants.

The garden was founded in 1959 by botanists Faustino Miranda and Manuel Ruíz Oronóz, with support from Efrén del Pozo, then UNAM's Secretary General. On 8 February 1961 it was integrated into the university's Institute of Biology. Miranda gathered young collectors such as Ramón Riba, Arturo Gómez-Pompa and Javier Valdez, who gathered plants across Mexico and later became noted botanists.

The garden's name honours Faustino Miranda, the Spanish-born botanist who founded it in 1959 and led early plant-collecting trips across Mexico. Since 1991 the nonprofit Amigos del Jardín Botánico has supported guided visits, courses and workshops held here. Guided tours introduce the collections to visitors.

The garden lies in Coyoacán, next to the Institute of Biology building on UNAM's campus. Only 2.5% of its 12.6 hectares is open to visitors, so follow the marked paths. Guided visits, courses and workshops are offered regularly; the Amigos del Jardín Botánico, founded in 1991, supports these activities.

Only about 2.5% of the garden's 12.6 hectares is open to visitors; the rest is reserved for research collections. The Amigos del Jardín Botánico, a nonprofit founded in 1991, supports its guided visits, courses and workshops.