Whisker me Away by Kala Aster

Freya Bloom wanted to sell tinctures, avoid commitment, and pretend her grandmother’s roses weren’t weeping black sap.
Instead, the town’s magical plants are dying, an ancient dryad is waking up cranky, and Hollow Oak has decided she’s their last line of defense.
Enter Kieran Holt: tiger shifter, reluctant hero, and aggressively hot in a “built my porch and ruined my boundaries” kind of way. The town council says he’s her magical backup. The universe says he’s her mate. Freya says absolutely not.
But the evil in the woods has other plans — and so do her roses.
She’s a legacy witch with control issues. He’s a lone shifter who’s allergic to feelings. Together, they’re Hollow Oak’s least qualified save-the-world plan.