I'm a little fat in the head. And this self assurance has gotten me in trouble before. For most tree seed, a quick potting of fresh (as in still moist) seed will result the next spring, in germinating seedlings. Its really quite dependable--mostly.
Until I run into a tree that won't paint inside those lines. Where exactly cornelian cherry first escaped from has me thinking it didn't have many chilling hours; Georgia, Turkey maybe ((shrugs shoulders)).
When all else fails it becomes time to drag out Mike Dirrs' Manual of Woody Landscape Plants. Where he recommends a warm spell of stratification, and then a cool one.
Where ever 'home' is for this dogwood, summer must go on for quite a spell. Dirrs' recommended warm is quite full on for summer, like 120 days of 70+Â°F.
Now lets see if I can provide this bounty without a heating mat...