Not exactly all by itself. We have to want to be in and among nature for its effects to provide our mental health with a boost.
That should come as a relief to anyone with access to nature who might have already tried apps, medication, machines, or other remedies to manage their emotions.
Several studies exist on the subject of nature helping to improve our moods. Overall, scientists seem convinced that being out in "green space" can give a positive charge to mental health by bolstering the immune system, stimulating social interaction and physical activity, and permitting overworked minds to find restoration and calm.