After cold stratification, sow indoors 8-10 weeks before the last spring frost. Press 3-4 seeds per group gently into the soil, without fully covering, to allow light for germination. Transplant seedlings, when they're approximately 3-inches tall, to slightly dry, well-drained, loose soil after the last frost. Thin to 1 plant per pot or space 2-3 feet apart. Allow soil to dry out between waterings and snip stems to harvest.
Annual or Perennial? Rosemary will grow as an evergreen perennial in warm zones. In cool weather zones Rosemary can be grown in pots and overwintered indoors or grown as an annual.
Cold Stratification. It's a Must! Rosemary seeds tend to have low germination rates. For best results, place seed packets in the freezer for 2-6 weeks prior to planting. This process, known as cold stratification, simulates a short winter and improves germination as well as overall plant health. Read our blog post on Cold Stratification Explained!
Wit & Wisdom: Rosemary tea is said to enhance memory; and in the language of flowers Rosemary's beautiful blue and purple flowers symbolize remembrance. Place a sprig of Rosemary (or Lavender) under your ironing board cover and it will release a lovely fragrance with the heat. Read The Old Farmer's Almanac Rosemary Growing Guide!
Companion Planting: In the garden Rosemary grows well near beans, cabbage, carrots, and sage.