If i you ask me,i really don't think getting a plants at home can really scare away the roaches compare to others non toxic roaches Repeller such as Baking soda and Boric acid.However it can make a difrence if we compare two house that one house has Plants or Flowers That believe can Repel Roaches or the other don't.
Bay laurel is one of the plants that believe can repel Roaches or others insect.
Bay laurel leaves have an essential oil that is about 0.8 to 3% of volume of each leaf. The bay laurel also produces fruits and dried fruits also have up to 0.6 to 10% of essential oil by total volume,The leaves of the bay laurel or sweet laurel are commonly used in cooking ,but they may also have cockroach-repellent properties. Bay leaves contain a number of essential oils, including terpenes and eucalyptol, an ingredient in some insecticides and insect repellents.
According to Herbs 2000, this plant is traditionally used to repel insects from silos and other food storage areas. Aerias Air Quality Sciences suggests placing bay leaves in all cabinets, the pantry and on shelves to repel these insects. Fresh bay leaves tend to contain more essential oils than the dry variety, but dry leaves may be used if fresh ones are not available.
According to wiki ,Bay leaf (plural bay leaves) refers to the aromatic leaf of the bay laurel (Laurus nobilis, Lauraceae). Fresh or dried bay leaves are used in cooking for their distinctive flavor and fragrance. The leaves are often used to flavor soups, stews, braises and pâtés in Mediterranean cuisine. The fresh leaves are very mild and do not develop their full flavor until several weeks after picking and drying.
Plants & Flowers That Repel Roaches
Herbs 2000: Bay Laurel