PROBLEM TO BE SOLVED: To provide a seedling transplanter with odd-row planting function designed to improve the balance between left and right weights through managing the support scheme for the planting units corresponding respective rows to be proper. SOLUTION: This seedling transplanter, for example, with 7-row planting function has such a construction as to be mounted with a laterally central planting unit 12c on the left side of the longitudinal transmission case 16b located at the second position from right among four longitudinal transmission cases 16a, 16b, 16c and 16d and another planting unit 12a adjoining to the right side of the unit 12c, a 3rd planting unit 12b adjoining to the left side of the unit 12c on the left side of the longitudinal transmission case 16c at the third position from right, and the other longitudinal transmission cases 16a and 16d respectively mounted with other planting units 12 on both left and right sides on left and right outsides of the second and the third longitudinal transmission cases 16b and 16c, respectively.
