Wow ive grown both of these as a matter of fact. right now i have black berry at 7 weeks flowering and i grew white castle last round. the white castle was some of the best final product ive ever had. it was great all the way around growing too, it just took about 11 weeks to flower tho. it tasted sweet and had a great indica sativa mix high. it had suprinsgly close internodes too making for a decent yield that white widow isnt known for, the ice did that part. the blackberry's ice influence is obvious too it has the same close internodes but even closer than white castle and much larger calyxes. blackberry is the best yeilding nirvana plant ive seen yet, even better than the old big bud x northern lights. its covered in crystals and smells spicey and sweet. i also have a chrystal female next to the blackberry right now and its awesome too. its similar to white castle with farther internode spacing but better flower to leaf ratio.