  Following Anders and Archer, we say that an unordered rooted labeled forest
avoids the pattern $\sigma\in\mathcal{S}_k$ if in each tree, each sequence of
labels along the shortest path from the root to a vertex does not contain a
subsequence with the same relative order as $\sigma$. For each permutation
$\sigma\in\mathcal{S}_{k-2}$, we construct a bijection between $n$-vertex
forests avoiding $(\sigma)(k-1)k:=\sigma(1)\cdots\sigma(k-2)(k-1)k$ and
$n$-vertex forests avoiding $(\sigma)k(k-1):=\sigma(1)\cdots\sigma(k-2)k(k-1)$,
giving a common generalization of results of West on permutations and
Anders--Archer on forests. We further define a new object, the forest-Young
diagram, which we use to extend the notion of shape-Wilf equivalence to
forests. In particular, this allows us to generalize the above result to a
bijection between forests avoiding $\{(\sigma_1)k(k-1), (\sigma_2)k(k-1),
\dots, (\sigma_\ell)k(k-1)\}$ and forests avoiding $\{(\sigma_1)(k-1)k,
(\sigma_2)(k-1)k, \dots, (\sigma_\ell)(k-1)k\}$ for $\sigma_1, \dots,
\sigma_\ell \in \mathcal{S}_{k-2}$. Furthermore, we give recurrences
enumerating the forests avoiding $\{123\cdots k\}$, $\{213\}$, and other sets
of patterns. Finally, we extend the Goulden--Jackson cluster method to study
consecutive pattern avoidance in rooted trees as defined by Anders and Archer.
Using the generalized cluster method, we prove that if two length-$k$ patterns
are strong-c-forest-Wilf equivalent, then up to complementation, the two
patterns must start with the same number. We also prove the surprising result
that the patterns $1324$ and $1423$ are strong-c-forest-Wilf equivalent, even
though they are not c-Wilf equivalent with respect to permutations.
