The Sunflower Festival in Thailand starts around November and goes on until about February. The best places to see sunflower fields are in Lopburi Province and Saraburi Province. Thousands of people from Bangkok head this way at the weekends for a day trip to take pictures in the sunflower fields. For people in Lopburi it has started to become a major tourist attraction. Each farm takes turns in planting the sunflowers so that there is at least one area of blooming flowers during this period.
The best places to see sunflowers in Lopburi are in the districts of Phatthana Nikhom, Chai Badan, and Khok Samrong. This is where I headed at the weekend. From Bangkok, I took Highway 1 north through Saraburi and then turned off onto Road 21 a little while later. 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.
During my last visit, I turned off on Highway 3017 towards Pasak Jolasid Dam. This is another tourist attraction. Then I drove back along Highway 3017 towards Lopburi. During that trip I visited about 4 or so sunflower fields but this time only found this one. According to posters, it will be there until 10 December 2011. The one next door to this one is advertised to start on 5 December 2011. However, I am not sure if it is really worth going all the way here this year unless you are going to see something else as well.