I'd describe it as a novel of magical fantasy set in contemporary realism.
Two sisters reconnect, one a gardening introvert whose "persuasive" ways with herbs and flowers made for fun reading, and the other, a rebellious teen now grown and with her own child, looking to escape an abusive relationship. Their relationship with each other develops and moves forward in this story of misunderstandings, forgiveness, love, and trust.
Two secondary characters I loved... an old aunt with the perpetual need to gift small, "seemingly useless" items to individuals and the old apple tree in the back of the garden....
A quick read that I highly recommend.
This book kind of reminded me of Practical Magic, two sisters in a big house, trying to avoid (or not) their family legacy. But it was so much more than that, obviously these women are more than just Waverlys, each one sort of has their own power. It really made me think about my own sister, and how rifts in family relationships can be fixed if you try.
If you come across this book, buy it. It's amazing.