Rosemary is an excellent indoor herb. Like other Mediterranean herbs, it's drought-tolerant and thrives in bright, sunny windowsills. Perhaps best of all, it's highly fragrant and delicious. Simply brush against the plant with your hand to release waves of delightful rosemary scent. In indoor space, rosemary benefits from being kept slightly dry and trimmed to remain within its natural pot size.

    Most plants with needle-like leaves are great air purifies, especially when it comes to humid air. Rosemary has strong air purifying power, breathe carbon dioxide and exhale oxygen. The most important function of this herb is its ability to improve cognitive function and shield the brain from free radicals. Rosemary will purify the air and it will also exhale some of its essential oils in the room.