Tree laden is a phrase that directly refers to trees that are heavy or full with something. This could be fruits, leaves or even snow. However, there are several synonyms that can be used to describe this same phrase. For example, the term "burgeoning" can be used to describe a tree that is laden with fruit. Alternatively, "lush" can be used to describe a tree that is laden with leaves. For snow-covered trees, "heavy-laden with snow" may be used. Other synonyms for tree-laden may include "laden with foliage" or "fraught with boughs." These synonyms can help to add variety and originality to your writing.