and is one of the most winter-hardy types (Zone 6). It has light blue flowers on upright 3-foot tall plants. The biggest threat to rosemary’s winter survival is wet, poorly drained winter soil ...

People who had been assigned to the rosemary-scented room performed better at both types of test, and were also found to have higher levels of 1,8-cineole, a compound found in rosemary oil ...