Rosemary prefers hot and dry climates, but will grow in cool climates. Literature says it requires frost protection, but my experience has been that rosemary is fine with frost once established.
Rosemary grows well from cuttings or you can purchase seedlings and seeds. However, unless you are planting a hedge, it is probably easier to buy a seedling.
Plant in full sun, but can survive in 6 hours light. Ensure the soil is drains well.
Rosemary is a great plant for pots, especially since it doesn't mind being dry, as pots often are. However, this does not mean it does not need to be watered.
Rosemary does not need to be succession planted. It is a perennial plant meaning you plant once and it will grow for years.
Grows well with carrots, cabbage, sage and green beans.
Rosemary is a light feeder and so doesn't need a lot of fertiliser. However, it will benefit from a seaweed tonic or fish concentrate once or twice over the warmer months.