The Poison Diaries Books in Order

The Poison Diaries is Maryrose Wood in a darker, more Gothic mood. The series begins with sixteen-year-old Jessamine Luxton, who has spent her whole life in an isolated cottage near Alnwick Castle in Northumberland. Her father, Thomas, is an apothecary with deep knowledge of plants and a locked poison garden full of dangerous specimens. Jessamine has been raised to respect what herbs can heal, and what they can destroy.

Then Weed enters the story. He is a mysterious young man with an uncanny connection to growing things, and Jessamine is drawn to him almost at once. Their relationship gives the books their emotional center, but it also pulls Jessamine closer to secrets her father would rather control. The more she learns about Weed, the poison garden, and the strange intelligence humming through the plant world, the more obvious it becomes that love and danger are tangled together here.

Setting does a lot of work in this series. Wood uses an eighteenth-century English backdrop, with cottages, gardens, hidden rooms, old remedies, and whispered fears, to create a story that feels both romantic and claustrophobic. The books are full of botanical detail, but the plant lore never feels like homework. It is part of the tension. Every leaf, root, and berry might cure someone, tempt someone, or kill someone.

These books smell of herbs and danger.

The larger arc follows Jessamine as innocence gives way to harder knowledge. In Nightshade, she is no longer simply the sheltered girl from the first book. She has been changed by grief, suspicion, and her own growing understanding of poison. Her search for Weed opens the door to worse threats, including the pull of Oleander, the Prince of Poisons. A later related book, Weed, shifts the focus back toward that unforgettable central figure and pushes the world outward, following him through new places and new moral tests.

What makes this series stand out is its mix of YA romance and creepy plant magic. The feelings are intense, but the books also care about obsession, control, innocence, and the cost of forbidden knowledge. Jessamine wants love and truth. Her father wants mastery. Weed stands somewhere between the human world and something greener and less safe. That triangle gives the story most of its bite.

If you like historical fantasy with a strong atmosphere, a dangerous garden, and a little melodrama in the best sense, this series is worth a look. Start with The Poison Diaries and keep going in order, because the emotional fallout matters as much as the plot.