Bach Flowers

English physician Dr. Edward Bach (* 1886, † 1936) discovered the Bach Flower Remedies as they are called today. These natural essences have become legendary for their effective treatment of common conditions.  He himself is described as "a precursor of the acceptance of a 'holistic' view of the patient as distinct from conventional medicine's focus on the treatment of symptoms, Bach provides the intellectual bedrock of much of modern alternative therapy" (http://www.edwardbach.org). Bach Flower Therapy works with 38 flower remedies that act on disharmony within the patient and pave the way toward recovery. Twelve of these are called the Twelve Healers. In a 1933 article on the "Twelve Healers" Bach revealed that the twelve primary types of personality "are indicated to us by the moon according to which sign of the Zodiac she is in at birth" as Bach expert Candy Hillenbrand put it. 

Bach also strongly emphasized the importance of the moon sign: "our personality we learn from the position of the moon at birth; our dangers of interference from the planets". 

Candy Hillenbrand suggested possible moon sign correlations as Bach himself could not finish his work in this respect. Her suggestions are used by the Moon Sign Calculator, to recommend a supportive remedy which corresponds to your moon sign and your personality.

Link: Candy Hillenbrand,  Bach's View of Astrology: The Moon Sign and the Twelve Groups of Humanity.