the blueberry strain...

two questions:
is there any difference between BLUEBERRY, BLUEBERRY KUSH, AND/OR BLUEBERRY YUM YUM!?

i have been trying to figure this out, so many different websites have different names but i dunno if these are all different strains. what's the deal??

second part, can you clarify what the mother plants or the origins of these strains if any are cross-bred? thx!

Blueberry Kush is a cross of some kind of Kush and Blueberry. Don't have a clue about the Blueberry yum yum

isnt blueberry yumm yumm shit luda says in that song