Colorectal Surgeon vs. Gastroenterologist. Many patients often do not know if they need to see a Colon and Rectal Surgeon or a Gastroenterologist for their symptoms or condition. Moreover, even more are confused as to the difference between a Colon and Rectal Surgeon and a Gastroenterologist. The differences between the two specialties can be quite large.
Magnolia stellata needs a cold period (at least 2 to 3 months) for germination. I sow freshly cleaned seed in rounds (multiple seeds per pot) and place in a critter-proof frame outdoors (chipmunks, squirrels, and other animals love to eat the seed and/or dig through the rounds to bury their nuts).
If the seeds were stored in a basement or root cellar, some of the seeds could be viable for twenty years. If they were left in a shed, most would be dead in a few months. How they were kept is the most important factor. You could freeze them indefinitely.