https://rootswithradiance.com/blog/ Field notes on the plants behind the ritual. en-us https://rootswithradiance.com/blog/mysteries-of-rosemary.html https://rootswithradiance.com/blog/mysteries-of-rosemary.html Tue, 08 Sep 2026 12:00:00 GMT On the night of San Juan, Spanish villagers left rosemary steeping under the open sky — and the chemistry behind the ritual is more interesting than the romance.