  We study out-of-equilibrium dynamics caused by global quantum quenches in
fractonic scalar field theories. We consider several types of quenches, in
particular, the mass quench in theories with different types of discrete
rotational symmetries ($\mathbb{Z}_4$ and $\mathbb{Z}_8$), as well as an
instantaneous quench via the transition between them. We also investigate
fractonic boundary quenches, where the initial state is prepared on a
finite-width slab in Euclidean time. We find that perturbing a fractonic system
in finite volume especially highlights the restricted mobility via the
formation and subsequent evolution of specific $\mathbb{Z}_4$-symmetric spatial
structures. We discuss a generalization to $\mathbb{Z}_n$-symmetric field
theories, and introduce a proper regularization, which allows us to explicitly
deal with divergences inherent to fractonic field theories.
