CHOOSE THE BEST SEED FOR YOUR LAND ASK OUR CERTIFIED SEED ADVISORS WHICH PRODUCTS ARE RIGHT FOR YOUR AREA. WE HAVE TRUSTED SEED ADVISORS IN LANGDON, MANDAN, BUTTE, HETTINGER AND MINOT, ND Established in 2000 as a simple grain cleaning center, Custom Grain & Seed has expanded to serve even more local farmers in Langdon, Mandan, Butte, Hettinger, and Minot, ND. We're proud to have grown into a full-service seed conditioning center offering a wide range of seed products.