The college is traditionally recognised for horticultural and agricultural courses at two specialist sites in Pershore, near Worcester, and Holme Lacy, Hereford.
OWB is the first agency to promote the college, with previous PR and marketing undertaken in-house.
The campaign will involve press and radio advertising, direct marketing aimed at young people, web development, and PR through local and trade press.
Agency director Andy Wilkinson said: ‘This is a great, fun account. We have a blank piece of paper and the remit from the college is simple – bring in more students.’