The term "humble plant" doesn't really do justice to the vast diversity of plants that are in the world, so it's important to be able to describe them with more precision and detail. Some synonyms for humble plants might include "unassuming vegetation," "meek flora," or "unpretentious greenery." Others might use words like "unobtrusive botany," "modest growth," or "unshowy foliage" to get the point across. Regardless of the specific phrase used, the goal is to find language that truly captures the essence of these amazing organisms without reducing them to a single, overly simple label.