I would urge you to explore the harmonic minor scale across the entire guitar neck using the CAGED system. The good news is that, if you are confident with using the natural minor scale ...

Each scale has been illustrated from an A root note for ease of learning, as well being able to compare the differences ...

Harmonic minor keys are used when writing chords. There is another version of the minor key known as the melodic minor. This is used when writing a melody. Each key signature has two possible keys.