Amni Visnaga, also called Khella essential oil, is steam distilled from the seeds of the khella plant, which grows in Morocco. Amni Visnaga is not purchased for its aroma; when steam-inhaled, it is a powerful antispasmodic and thus is used to treat bronchial asthma and bronchitis. It also is used to control allergic reactions, because it prevents the release of histamines.
"Plants have best friends just like people do. Marigolds help tomatoes and roses grow better. Nasturtiums keep bugs away from squash and broccoli. Petunias protect beans from beetles and oregano chases them away from cucumbers. Geraniums keep Japanese beetles away from roses and corn. Chives make carrots sweeter, and basil makes tomatoes even tastier"