After 3 months of seeding, the top 5% superior and the bottom 5% inferior seedlings of Leucaena diversifolia were selected for growth comparison. Both types of seedlings were planted in radomized pairing plots on slopes at Sher-Ko Farm of Chia-Yi Agricultrue College. The 4-year-old data inticates that in all ages the trees from superior seedlings performed better than those from inferior seedlings in both height and DBH growth. The Student t-test also revealed from second year, the height growth of superior and inferior seedlings were significantly different from each other. For 4th year, the DBH growth of trees from superior seedlings was also observed to be significantly different from those of inferior ones. Therefore, selecting of superior seedlings from nursery is recommended before planting of Leucaena diversifolia.