I did not realize the raspberry needed the warm/cold element. How interesting. I always knew that alot of dispersion is done by birds of course ...but I did not realize there was another physiological process happening with the seed...or that it was needed.
Jerry I have my one thing for the day! Ha!
Yes very complex seed . Do not let them dry out as it triggers another type of dormancy that could last for years . A lot of misinformation out there on these . Some say sulfuric acid but that is lab grade and hard to get . Battery acid is not strong enough or a least no one knows the length of time to soak in this dilution . Pure bleach for 8 hours is reported to work well . Nicking the seed did not work . I have spent years trying to find the right method .