Cucurbita maxima
Minimum seed count: 15
 
Also called Australian Blue.  This beautiful grey-blue squash is an Australian heirloom that was introduced to the US in the 1930's.  Large fruit (up to 20 pounds) have dense, sweet flesh with good flavor.  Good storage potential.  Of course their uncommon beauty also makes them a favorite for Fall decorating.
 
110-120 days