The phrase "leaved middle" can be used to describe the interior of a tree where the leaves are located. However, there are many synonyms that can be used to express this concept in a more poetic or descriptive way. For example, one could use terms like "foliage-filled core" or "lush center" to convey the image of a tree bursting with leaves in its middle. Other options might include "verdant heart," "leafy nucleus," or "lush midsection." By considering different ways to express the same idea, writers can add depth, nuance, and texture to their language, helping to create a more evocative and engaging prose style.