Photo : Patty Ho Uploaded on Wikimedia Commons by Lkcl_it, Yala National Park (Sri Lanka 2012), CC BY 2.0
Block I includes large grassland, tanks, water holes, lagoons, chena lands and some mangroves.
Block II is not very different from Block I and was once a fertile paddy. The Rhizophora mucronata, Sonneratia caseolaris, Aegiceras corniculatum and Avicennia can be found in these mangroves.
Block III is widespread and has a large forest area that houses Drypetes sepiaria and the Manilkara hexandra plant types.
Block IV has the Pitiya grassland which is extremely vital for the grazing animals. It also has the Zoysia matrella, Manilkara hexandra, Drypetes sepiria, Ceylon Satinwood, Terminalia arjuna, Limonia and Berrya cordifolia.
The Neem, Banyan, Toothbrush tree, Bell mimosa, Carissa spinarum, Euphorbia anti-quorum and Acacia eburnean can be found in Block V. This block has the most unique collection of trees and plants in all of Yala National Park.