The Garden Emerald (Chlorostilbon assimilis) is endemic to southwestern Costa Rica and Panama, and knowledge about its' reproductive habits is limited. We describe the nest and nestlings of the Garden Emerald based on a nest found in La Amistad International Park. The nest was built on an anthropogenic substrate, and was similar to nests described for other emerald species. However, unlike other emeralds, the nest contained no lichens, mosses, or ferns. The nestlings resembled adult female plumage, similar to that for other nestling emerald species.