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.
Most bags or boxes of lawn grass seed have an expiration date stamped on them. The seed, however, is generally good for up to 10 months past this date. Keywords: grass seed expiration, grass seeds germination, old grass seed. Photo by: USDA.