Common rosemary grows to about 2 ft indoors, tends to shed its needle-like leaves when dry. It likes a cool rather than warm spot and does well in the winter in a continuous watering pot. Light blue flowers are rarely produced in colder climates.

The very best variety for growing indoors as a foliage plant for kitchen and household use is "Salem".
'Majorca Pink' is smaller than the common type, having shorter leaves and amethyst-pink flowers.
'Tuscan Blue' grows upright from 2 to 4 feet tall, with dark blue flowers; it is useful as a border or hedge.
'Blue Boy' is compact and bushy with twisting stems; ideal for containers.
'Prostratus' has flexible, drooping branches. It is suitable for hanging baskets and is used as a groundcover in warmer regions.
'Lockwood De Forest' has lighter green foliage and deep blue flowers. It is good for draping over the top of a wall.
'Arp' is an exceptionally tough variety from northeast Texas that is hardy to -10° (Zone 6). It has light blue flowers.
'Nancy Howard' has white-flowers. It is also known as 'Alba Heavy Leaf.'
‘Logee Blue’ with dark blue flowers is less inclined to fungal disease indoors