Croton Trees (image) Penn State Share Print E-Mail Caption Croton trees are very common in Kenya. Until recently, local people valued them only for the firewood and shade they provide. The nuts they produce went to waste. Credit Courtesy Eco Fuels Kenya Usage Restrictions non commercial use only Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.