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.
Plant the onions in the soil differently, depending if you are using seeds, seedlings or sets. 1  If you are growing sweet onions from seeds, plant each seed 3/8 of an inch (1 cm) deep and 1/2 inch (1.3 cm) apart.2  When you plant rows, make sure they are 15 inches (38 cm) apart. Rows should remain separated by 15 inches (38 cm). 2  If you are planting sweet onions from sets, plant them 3 inches (7.6 cm) apart, and rows at 15 inches (38 cm) apart. 3  Plant them shallowly, with the roots into the ground, and the bulb only about 1/4 inch (0.6 cm) into the ground.