The Orcs treated cacao, locally known as Kakao, as something sacred and deeply connected to the Earth Goddess.
Because of that, their territory had thousands upon thousands of cacao trees surrounding it, each one mature and ready to bear fruit all year round.
The Orcanine tribe and the Orcupine tribe both worshipped these trees and protected them from any harm. It was a tradition for them to plant ten seeds to replenish any dead trees in the area, making sure that their sacred place was still blessed by the goddess.
This was started by their ancestors and was continued by each Chieftain in history.
It was the reason why this place was so important to the Orc Tribes. By leaving, they would also leave the place blessed by the goddess.
Even if they found fertile ground elsewhere, it would take them years and upon years to create a forest of cacao trees ready to bear fruit.