Yes it is called hybrid vigor when you take to inbred lines and cross them to each other you receive a large dose of hybrid vigor
I can vouch for this phenomenon..see pic of bud structure and need/strategy for bending stalks over after humingous 2ft to 5ft stretch within 2wks of flip! Imma happy grow camper after crossing two sativa-dominant IBLs, one CBD-rich/mid-THC
, the other, high-THC!! .. other than the obvious supercropping, this is the plant's natural growth pattern in only a 1gal bag
(2 liter/half-gal soda bottle for scale)