The cardiovascular system consists of the heart, blood vessels, and the approximately 5 liters of blood that the blood vessels transport.
This planter also holds begonia, marigolds, and a pepper plant. Growing Swiss chard works best in rich, moist soil with a soil pH between 6.0 and 6.8. Plant about 12 to 18 inches apart in fertile soil, watering directly after planting. Work nitrogen-rich amendments such as blood meal, cottonseed meal, feather meal, or composted manure into the ground before planting.
Doing so allows the seeds to germinate without having to compete for space. Make sure to buy fresh seeds for planting each year, as they do not stay fresh for long. 1  If you are transplanting seedlings, space spinach plants about 12 to 18 inches (30.5 to 45.7 cm) apart.