The best time to plant a rosemary plant in warmer climates like ours is in the spring or fall. Planting in the spring gives rosemary time to establish its roots before the heat of summer hits.
Rosemary is low maintenance, but it does not like to be overwatered. To prevent root rot, avoid frequent waterings so that the soil can dry out a bit in between watering.
Ready to harvest about a month after planting out in the garden. Once your rosemary is well established, harvest often to encourage new growth. Cut those older, outer stems to prevent this herb from becoming too woody.