Placing absolute trust in human beings while turning away from God leads directly to a life of profound loneliness, dryness, and futility. This spiritual reality is captured through the vivid image of a dying desert plant. Commentators offer different ways to understand the nature of this plant. One approach views it conceptually as a solitary, bare, and pathetic tree that is completely incapable of bearing fruit [רש״י, מלבי״ם, אברבנאל, אהבת יהונתן, שטיינזלץ]. Conversely, others identify it as a specific type of thorny desert shrub or wild grass [רש י בשם מנחם, רד״ק, מצודת ציון]. Regardless of the exact species, it is rooted in a flat, desolate wasteland, perfectly mirroring a person who has entirely severed their connection to any source of blessing and life.
In this barren environment, the plant is denied any experience of good, which represents the life-giving rains of blessing. Instead of receiving nourishment, it is forced to exist in a state of extreme dryness, constantly scorched by the burning heat of the sun [רש״י, רד״ק, מצודת דוד, אברבנאל]. Its isolation is compounded by its surroundings. It is doomed to dwell only among neighbors just like itself, forced to live alongside thorns and other dry, withered trees [מלבי״ם]. The very ground it stands on is a burnt, salty earth that cannot support growth and remains entirely unfit for human settlement [רש״י, מצודת דוד, רד״ק].
This imagery creates a picture of a person cut off from abundance in every possible dimension. There is no blessing falling from above, the immediate environment is dry and burning, and the roots below draw up nothing but saltiness and death [מלבי״ם]. The deepest tragedy of this condition is that the plant does not simply wither and die immediately. It lingers in its parched state, much like a wicked person who endures a continuous life of suffering devoid of any blessing, reaching a point where death might even seem preferable to such a painful existence [רד״ק].