The Guianan savanna spans the southern reaches of Venezuela, Guyana, and Suriname and the north of Brazil, covering rolling upland plains on the Guiana Shield between the Amazon and Orinoco basins and including the celebrated Gran Sabana. It is a mosaic of open grasslands and scrubby vegetation studded with isolated forest patches and gallery forests that thread along streams, with savanna grasses such as Trachypogon, Andropogon, and Axonopus, palm-dotted stretches of moriche palm (Mauritia flexuosa), and scrub genera including Clusia, Calliandra, and Chamaecrista. The climate is warm and tropical, with average temperatures around 20 degrees Celsius and annual rainfall generally between 2,000 and 3,000 millimeters. Despite their limited extent, these savannas are a plant-diversity hotspot: in Suriname the savanna patches cover only about one percent of the land yet hold some 800 plant species, roughly a fifth of the country's flora, and the ecoregion's flagship species is the critically endangered Rio Branco antbird. For gardeners, the region is the native home of ornamental genera such as the showy-flowered Calliandra and the stately moriche palm.

At a glance

About the tropical & subtropical grasslands, savannas & shrublands biome

Warm grasslands and savannas where grasses dominate and trees are scattered, maintained by seasonal rainfall, grazing, and fire. They support large herbivore communities and respond sharply to wet–dry cycles.

Catalog plants suited to this ecoregion

No catalog plants intersect this ecoregion's zone range. As the catalog grows to cover this region's climate band, suggestions will surface here.

Collections for this ecoregion

No curated collection's plants all fit this ecoregion's zone range. We surface a collection only when every member would grow here — partial fits get filtered out rather than mislead. As the catalog and the curated set both grow, this section will fill in.

Related ecoregions