We've had Rosemary and Thyme and cosy crime further popularised Richard Osman and Rev Richard Coles.
Now there's Eustachia Rose, a botanical toxicology professor at UCL, but with a PhD student stalking her to gain access to her poisonous plant collection.
The student contacts a lab that's illegally selling plant toxins, but, guess what, turns up dead soon after.
Eustachia begins investigating this toxic situation, which includes another murder amid inspiration from plants, helped by the author's BA Hons degree in ornamental horticulture and design gained in the 1990s.
The author is also inspired by Alnwick poison garden and Agatha Christie, who was forever poisoning her characters, often with cyanide, but also with arsenic, strychnine, digitalis, hemlock and morphine.
There's a whole series awaiting here (this is the second) and with so many well-judged reference points and the author's obvious knowledge of plants, this is a palliative and soothing sleuting cultivation.
