The best places to see sunflowers in Nakhonratchasima are in the districts of Amphoe Nong Bun Mak. This is where I headed at the weekend. From Bangkok, I took Highway 124 north through Nakhonratchasima. The sunflower fields are usually easy to find as you just have to follow the signs. However, this year due to the floods, there are not as many. Also, as you can see by these pictures, the sunflowers are not very big. I visited this same field three years ago and it was very crowded. When I went at the weekend, I was the only one there.