The main economic activities of the people of Njombe include cultivation of food crops. Njombe was one the largest producers of Irish Potatoes, Maize and partly beans.
As for cash crops, timber and electric poles are produced at large amounts. It has come up of recent that a large population has embarked onto planting trees for timber. The common tree species grown here include Pines at a very large percent and a little of Eucalyptus and Cypress.
Timber is sold directly to Dar es Salaam where there is the larger market and the other is locally sold for carpentry, building and construction activities
