Taste of Heaven blackberry ( Rubus 'Ponca') is the sweetest, most flavorful blackberry on the market - and now you can grow it at home. We know, that's a tall claim, but you don't need to take our word for it: this article in the journal HortScience confirms it . And we know because we tasted literally hundreds of different blackberry varieties before deciding this would be the one to make it on to further testing. Taste of Heaven is a vigorous, thornless blackberry that produces large, luscious fruits over several weeks in summer. It's a floricane variety, fruiting only on second-year canes, and does not strictly require trellising or support, though in the garden, it is easier to care for and harvest with something in place.