Which it did. So I’d say it’s safe to say that this baby groot is still groot and Baby Groot wearing Infinity Gauntlet shirt, hoodie, sweater and v-neck t-shirt. Just that since he’s so very tiny I’m guessing it causes him to revert a certain amount until he can regrow back to his former glory. I’m fairly sure that it is the same entity and not offspring. Rocket didn’t find a seed or anything that would suggest offspring, he found a limb that he figured would regrow.

