Paulownia Seed Storage
Paulownia seed stores very well. I have personally tested seed viability after seven years of dry storage at room temperatures. Rates were low (less than 10 percent), but I could still get some to sprout.
When stored between 33 to 39°F (in a dry environment), I lost about 10 percent germination each year. Fresh seeds have a germination rate of 90 percent. Hybrids are much less. Fresh seed require no stratification to break dormancy.
If you plan to do long-term storage of several years, use your refrigerator.