Rosemary Boxer and Laura Thyme discover they share more than a love of gardening when a suspicious fatal car accident leads them to the house of a wealthy businessman.
While engaged on horticultural work in the grounds of pop star Nev Connolly's supposedly haunted mansion, Rosemary and Laura uncover the remains of a racehorse. Before long, gruesome revelations are coming thick and fast as Nev is shot dead and more bones are discovered - this time belonging to a young woman. As they investigate further, the green-fingered duo are plunged into a sinister mystery with its roots deep in the past.
Laura and Rosemary are asked to restore an ornate water garden cascade at a luxurious health spa run by a seventy-five-year-old woman and her children. But when the woman is found strangled, the two amateur sleuths must crack a floral code and unearth a past tragedy to pinpoint the murderer.
Rosemary and Laura investigate two deaths connected to a language school.
The mysterious death of a blind professor leads the duo into a world of drugs, murder and high finance.
In the village of Baffington, the duo encounter a local land dispute, unrequited love and murder.
Laura and Rosemary are brought in by old friend Julia Moore to design a memorial garden, based on the myth of Orpheus and Eurydice. Julia is housing Laura's estranged daughter Helena. But family matters are put on hold when another tenant is found dead and the garden the partners are working on is vandalized nightly.
An old school friend invites the ladies to restore a 150-year-old garden at her French Riviera estate before re-opening it to the public. One of the neighbours is strongly opposed to the impending arrival of tourists.
Rosemary and Laura are hired to investigate why the newly planted roses at a very traditional prep school are dying. Then at the long-held annual ritual of the Night of the Stag, a shy geography master, is killed.
Rosemary and Laura are to advise celebrity Quinnie Dorell in her new job as host of a garden make-over show. Then Rosemary is the victim of a suspicious accident probably intended for Quinnie, and a murder occurs in secluded lake. It's clear someone doesn't want the show to air.
Rosemary and Thyme are way behind in their preparation of the garden of a restaurant opening soon on the Ligurian coast of Italy. As they tour the glorious Giardini Tremonti for inspiration, they are sidetracked when a member of their party is murdered.
When a woman who posed as Rosemary to gain access to Engleton Park is found dead and the once perfect garden becomes so blighted it can no longer be open to the public, Rosemary and Laura must look back into British history to find the answers to these mysteries.
In the village of Rowfield, the Garden Open Day Scheme is the highlight of the social calendar. But Rosemary and Laura are called in by the organizer to save the day when the gardens of the main contestants are all afflicted with the same blight. Events take a darker turn when the organizer's rival is found dead and his garden wrecked.
Christmas Special: Laura and Rosemary are called in to tackle a stubborn species of weed threatening an entire year's vintage at the Crickle Valley vineyard. As ever, they find themselves in the right place at the right time when the body of a wine critic is discovered on the premises.
In preparation for the millennium celebrations at Wellminster Cathedral, Rosemary and Laura are asked to restore the old monastery "physik" garden. But when a young woman is found murdered, they realise someone is not happy about their work and that they could be in serious danger.
The granddaughter of a famous botanist is selling her house and has asked Rosemary and Laura to tidy up the garden and reorganize the seed museum. But when a mysterious South American man is found dead in the back garden, it seem sthere is more to the seed collection than meets the eye.
A former boyfriend of Rosemary's invites her and Laura, to help create an Arabic garden at his home in southern Spain. But one of the local residents is found dead, and a mysterious landowner, Luis Mendes, is the chief suspect.
As Rosemary and Laura help re-create an original Victorian planting in Regent's Park, Pavel Volkar, a Harley Street psychiatrist is found murdered. Holly, Volkar's bereaved three-legged dog, may be key in solving the murder.
While working on a memorial garden meant as a wedding present, Rosemary and Laura find an abandoned baby under a gooseberry bush. As they try to find out who the mother is and why she would abandon him, another mystery lands in their lap.
Laura's son, Matthew, and his friends are on holiday at a beautiful tennis camp in southern Spain. When one of the players is found dead after a night out, everyone assumes it was a drunken accident, but Laura and Rosemary suspect foul play.
Rosemary and Laura prepare the garden of the Open Air Theatre for opening night as one of the actors accidentally shoots himself during rehearsal. The police discover the gun was loaded with live ammunition.