The present invention relates to a composition comprising crystal of flumioxazin which shows a powder X-Ray diffraction 5 pattern having diffraction peaks with 20 values (0) shown in Table 1, said pattern being obtained by CuKa rays diffraction analysis, Table 1 20 value (0) 9.8 ±0.1 11.4 ±0.1 12.7 ±0.1 13.8 ±0.1 16.0 ±0.1 16.4 ±0.1 16.7 ±0.1 and one or more herbicidal compounds selected from the group 10 B-1, B-2, B-3, B-4, B-5, B-6, B-7, B-8, B-9, 3-10, B-11 and B-12 described in the specification. According to the present invention, a wide range of weeds can be controlled in a crop field, land under perennial crops, or non-crop land.
