Seedlings of more than six months old are also not recommended for out-planting as these gain more height alongwith more cost for retaining them for longer time in the nursery. The study was designed to find out the optimum and economical age/size of Eucalyptus camaldulensis tubed nursery plants for transplanting in the field. Six different age groups of seedling were planted for this purpose. Results revealed that seedlings of three months old or less are not suitable for out-planting due to their high mortality rate. Seedlings of four and a half to six months are best for transplanting in the field.