Trouble in Bloom (A Nina Quinn Mystery #4)
Heather Webber

And that's only the tip of the iceberg. While plant–sitting for a friend, Nina stumbles upon a stash of marijuana growing in the woman's closet. That leads Nina to a local holistic healing center, where it looks like there's a little bit of 'extracurricular' activity taking place. And speaking of illicit goings–on, Nina's seemingly benign neighbor, Mrs. Deibel, turns up dead, exposing the gambling den she's been running out of her home!
With murder and vice around every corner, Nina barely has time to keep her mind on her current project––installing an indoor garden at a local nursing home. It will take some expert juggling, as well as some undercover snooping, for Nina to put an end to all of the madness and restore some sort of order to her always–tumultuous life!