Heart & Blood Vessels: Your Coronary Arteries. The heart receives its own supply of blood from the coronary arteries. Two major coronary arteries branch off from the aorta near the point where the aorta and the left ventricle meet. These arteries and their branches supply all parts of the heart muscle with blood.
Mound the soil into a raised rows to a height of 8 to 12 inches and 6 to 8 inches wide, spaced 3 to 4 feet apart. This provides loose soil for the formation of tubers and promotes healthy growth. Plant sweet potato slips 10 to 12 inches apart and firm the soil down with your hands to secure the plant. Water thoroughly to moisten the mound of soil. Keep soil evenly moist until new growth appears. Mulch with organic matter to conserve moisture and prevent weeds.
Cut seed pieces at least one day before planting to allow cut surfaces to dry. Drying allows the pieces to form a wound- and disease-protective surface. Small potatoes may be planted whole. Plant seed pieces cut side down, 10-12 inches apart and about 3-5 inches deep, in rows 30-36 inches apart. Space pieces closer for smaller tubers and farther apart for fewer but larger tubers. Cover pieces with 4 inches of soil or compost.