Methods, devices, and compositions described herein are directed to artificially evolving an organism for use as a biocontrol agent. Methods, devices, and compositions described herein are useful for evolving a microorganism to acquire traits not naturally associated with the microorganism. The artificial evolution process can utilize culture methods and devices designed to accommodate particular culture methods described herein. The organism can be artificially evolved for a characteristic such as ultraviolet light tolerance, chemical tolerance, thermotolerance, enhanced growth rate on a target carbon source, host specific growth, modified sporulation characteristics or modified spores.