A vineyard is an expensive, long-term investment in comparison to other agricultural pursuits. Bolen said one acre of winemaking grapes can cost upwards of $10,000 and take three to five years for a return on investment. Managing a vineyard is a time-intensive and largely un- mechanized endeavor. Growing grapes is hard enough as is without the added stress of protecting your crop from one of the most powerful herbicides commercially available to farmers.