Laura Thyme gave up being a policewoman after marrying her husband and instead devoted herself to being a housewife and caring for her beloved garden. After years of what she thought was a happy marriage, her husband leaves her for a younger woman. Not yet sure what to do with herself or where to go, Laura meets Rosemary Boxer, a plant pathologist and lecturer at a university. After a friend of Laura's is killed in a car accident that Laura is convinced was not an accident, Rosemary encourages Laura to accompany her so as to get her mind off things. Unfortunately for Rosemary, it's not long before she, too, finds herself having to deal with personal issues, after she loses her position at the university out of the blue.
Working together, Rosemary and Laura figure out what happened to Laura's friend and more. Deciding that they make good friends and partners, they build off their mutual love for plants and start a combination landscaping and plant/garden problem-solving business. In their capacity as gardeners (or whatever you want to call them), they often find themselves as newcomers in areas that just happen to have murders and other shady things going on. Because they're basically in the background, they overhear people saying things that provide clues to whatever mystery is going on. Also, sometimes their investigations into whatever plant-related problem they're trying to solve reveals something about the mysteries.
In these first few episodes, Rosemary and Laura look into murder mysteries involving unearthed horse and human bones, a health spa with flowers that may reveal secrets from years ago, a college trying to desperately to present a good image despite a few inconvenient deaths, a communal garden with a strange blight, and unrequited love.
