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.
If it is too soon to plant the seeds out you can add your germinated seeds to the compost or use them as a center piece on the table and see how long you can grow the seeds in a paper towel. Seed Life Span. Different seeds have different life spans. Onion seeds, for example, rarely live over two years, where as alfalfa seeds can be viable for 20 years. There are even reports of seeds that are hundreds of years old and the seeds will still germinate. How the seeds are stored affects the lifespan of the seeds. Some seeds, no matter how they are stored, just donât live long at all. The chart below shows the average life spans of seeds that are stored properly.