Global energy demand, civil unrest, climate change, and an emphasis on sustainable systems have recently renewed interest in agriculturally produced biofuels. Biologically derived diesel fuel is an attractive energy source for agricultural producers because diesel is a primary fuel source, there are a variety of available oil seed crops, and processing of oil seed to biodiesel can be done easily, economically, and on a small scale. Four oil seed crops Camelina (Camelina sativa), spring planted Canola (Brassica napus), Safflower (Carthamus tinctorius), and Sunflower (Helianthus annuus) were evaluated for agronomics, seed yield, and oil yield in 5 central Utah locations during 2006. Research and demonstration plots were seeded in a Randomized Complete Block Design (RCBD) with split plot overlays of preemergent herbicides, trifluralin and ethalfluralin. Canola entries were glyphosate resistant and were evaluated with and without the use of glyphosate herbicide. Preemergent herbicide treatment produced lower weed populations with no apparent crop injury in all species. Ethalfuralin provided better weed control than trifluralin at some locations. Preemergent weed control was not sufficient in some locations depending on weed species. Preemergent combined with glyphosate treatments provided superior weed control with no apparent crop injury in canola plots. Oil seed yield was greatest with sunflower followed by safflower, canola, and camelina in descending order. Oil seed average yields varied from 474 kg/ha to 3169 kg/ha. Seed yields and corresponding oil or biodiesel yields were sufficient for sustainable farm fuel needs but were not economically competitive with other irrigated cash crops in the region, hay and corn silage. Oil seed crops for biodiesel production in Central Utah will probably be used in crop rotations but are not likely to displace commonly grown crops at current energy prices.