To provide a seedling growing pot for growing a plant seedling that can simplify the transplantation work, omit the fertilization work following the transplantation, and can perfectly get rid of the anxiety about soil (environmental) contamination, because the fertilizer used is constituted with natural manure, without adverse effect clearly on the soil from the material point of view, moreover, can freely set the period of pot degradation in the soil from a very short period to a long period and can save the cost.

The objective seedling growing pot A is produced by using the crushed bodies of a decayed vegetation, for example, leaf mold that becomes the fertilizer later as the main component and subjecting the crushed bodies to heat compression-molding into a pot shape, by using the paste of a natural food as a binder that is dissolved in the soil in a short period.