9.Pluto- 39.4 AU why do astronomers not measure the distances to stars in kilometers? distance to stars are so great that the number are too large to work with easily.
Some seeds can last for three to four years, such as: 1  asparagus. 2  beans. 3  broccoli. 4  carrots. 5  celery. 6  leeks. 7  peas. 8  spinach.
Grass seeds, like perennial ryegrass (Lolium perenne), which grows in U.S. Department of Agriculture plant hardiness zones 3 through 9, may last up to five years in ideal storage conditions, notes Oregon State University Seed Laboratory.