Larry Weaner, author of the book, Garden Revolution says something to the effect that seeds should be planted as soon as they form on the plant for a better chance of germination. He also says seeds can stay dormant in the ground for a long time. He uses the example of a tree falling and disturbing the soil where native herbaceous plant seeds become exposed to light and grow. Basically he suggests the seeds were already there, just dormant. Yet he says seeds don’t store well artificially. If this is true I wonder why seeds can stay viable in the ground for so long but not in artificial storage?
Montgomery County Maryland
All seeds are different. Depending upon the species and conditions some seeds will remain viable for years and some seeds like corn and lettuce for a year or two. Some seeds in the ground will be eaten or decayed. Seeds stored artificially vary depending upon the species and how stored.
It would be a good idea to consult books about seeds in the library for more information. You can also check the National Agricultural Library. https://www.nal.usda.gov/contact-us