A flower remedy is the dilute extracts of various types of flowers and plants that are used to treat animals and people. They are similar to homeopathic remedies in that they are diluted and potentized to make them more effective than just using the original flower as a herbal extract.
The original flower remedies were first produced by Dr. Edward Bach, a famous British bacteriologist and homeopath. He developed the Bach Flower Remedies when he was working as a homeopathic practitioner. Dr. Bach wanted to find a simple form of treatment that would address the imbalances or negativity that he believed contributed to diseases.
Dr. Bach developed a line of flower remedies that he claimed would remedy negative emotional states, along with a system of matching a specific flower remedy to a specific problem. The flower remedies act to balance non coherence in the emotional and spiritual body, and bring about a gentle healing by bringing the body back in balance with itself*. There were originally thirty eight Bach Flower Remedies that at that time Dr. Bach felt would correct all imbalances that were possible. There are remedies such as Holly which he found would heal the state of anger, and open the heart, and remedies that deal with a variety of other emotions from lack of confidence to over enthusiasm and impatience.
The flower remedy is prepared by gathering flowers from nature when they are just at the point of perfection making sure that the flowers are free from any toxins and preservatives. The flower remedy is made by leaving the flower out in the sun and the extracted essence is then diluted in water and preserved with alcohol to make what is referred to as the  mother tincture. The resulting flower remedy is then diluted in spring water to make a solution that can be taken by an animal or a person.

As described above, flower remedies and essences have many and varied uses, but act mainly on the higher emotional levels. The body is affected very much by the emotions and the mind, and by healing at a deeper level flower remedies can shift illnesses, either alone, or more often in combination with other forms of treatment, such as aromatherapy, massage, acupuncture or acupressure. I have had the best results in combining other holistic therapies with the flower remedy.

Detailed information on Healing Herbs flower remedies

Bach Flower Remedies