I'm still under the impression that Rocket doesn't understand Groot, either. Is it a certainty that there is a translation?

@CaseyJones said:

When Peter was talking to adolescent Groot he appeared to understand him, did having his celestial DNA jump started give him this ability?

I wondered the same ... I'm assuming it's connected with what transpired in the movie

@Halberstram said:

I'm still under the impression that Rocket doesn't understand Groot, either. Is it a certainty that there is a translation?

Rocket understands him in the books.

I think you could tel just from the tone of voice what message he was sending (Ha Ha)

@BarkingBaphomet said:

@Halberstram said:

I'm still under the impression that Rocket doesn't understand Groot, either. Is it a certainty that there is a translation?

Rocket understands him in the books.

And in the movies - that was clear in the first one

@Taylorfirst1 said:

I think you could tel just from the tone of voice what message he was sending (Ha Ha)

I agree. Or maybe Rocket taught Peter how to understand the "groot" language.

Will he be an adult by the next film?

@Movie Queen41 said:

@Taylorfirst1 said:

I think you could tel just from the tone of voice what message he was sending (Ha Ha)

I agree. Or maybe Rocket taught Peter how to understand the "groot" language.

Will he be an adult by the next film?

Yes - Gunn explained timelines in an interview. Very very little time has passed bw Guardians 1 and 2 (hence the reason for groot still being a baby). By the time Infinity War arrives next Summer, 4 years will have passed in Guardians timeline, so by that time Groot will be much larger.

ya rumor is groot and hulk fight so he must be full grown by then