Even seemingly roasted seeds can sprout (personal experience).
After all the name Phoenix refers also to a mythical bird that was getting reborn from its own ashes, coincidence? I don't think so
Here is another pic (used as my avatar) from another natural stand of Phoenix theophrasi in Agios Nikitas. Notice please on the upper left corner of the pic., how on fallen horizontal trunk emerge new suckers!!!!!!!
Tough fauna, tough flora, tough people, tough, tough tough....