La Plata Botanical garden, Botanical garden in La Plata, Argentina.

The Carlos Spegazzini Botanical Garden and Arboretum covers 2.47 hectares between streets 116 and 118, avenue 60 and diagonal 113 in La Plata. Its arboretum is laid out in 15 numbered patios, among them Los Laureles, El Ibirá Pitá, Los Eucalyptus, Las Tipas, Las Camellias, Los Robles, La Araucaria, El Molle, Los Olmos, El Bracho, Los Podocarpus, Las Palmeras, La Maclura, El Lapacho and Las Paltas. The collection holds about 500 herbaceous forms and 679 tree species, 414 exotic and 265 native.

Carlos Spegazzini founded the garden in 1891 while teaching at the Faculty of Agronomy of La Plata, making it Argentina's first botanical garden. Its first plantings were native trees he had collected on his travels and kept at his house on Avenida 53 No. 477. The garden now belongs to the Faculty of Agricultural and Forestry Sciences of the National University of La Plata.

The garden belongs to the Faculty of Agricultural and Forestry Sciences of the National University of La Plata, and its grounds house the chairs of Plant Morphology and Plant Systematics, the Institute of Plant Physiology (INFIVE) and the School of Forestry. It is named after Carlos Spegazzini, the botanist and naturalist who founded it in 1891.

The garden is open Tuesday through Friday and requires comfortable shoes due to the large area and some unpaved paths. Free guided tours in Spanish are offered on weekends and help visitors understand the different collections.

The garden's 15 numbered patios are named after the trees planted in them, from Los Laureles and Las Tipas to La Araucaria and El Lapacho. Its herbarium holds over 6,000 vascular plant species from every biogeographic region of Argentina, including 106 specimens from the Malvinas Islands brought in the 1970s by agronomist Milán Dimitri.