Butternut squash can be grown by directly sowing the seeds in to the garden, however the sowing has to be done sometime in late spring, cover these seeds with ½ or ¾ inches of fine soil. These seeds can also be planted in individual peat pots if you plan to grow them indoors. The spacing of these seed if growing in a garden has to be done around 4 inches apart. This way a bunker will have at least 6 to 8 seeds. When the butternut squash plants grow up to 4 inches tall, very carefully thin or transplant these plants to 3 very health plants per bunker. During the time of Germination make sure that the quality of the soil is moderately moist. Germination also depends the warmth of the soil.