Valeriana officinalis
Commonly called garden valerian, this long-lived flowering plant hails from Europe and parts of Asia and offers various health benefits. While it may help with sleep issues, stress, and even cooking, it's wise to check with your doctor before use.
This herb flourishes in moist soil conditions and can reach heights of 5 feet, depending on your climate zone. It needs full sunlight exposure and typically flowers in early to mid-summer. The plant generally resists pests and diseases well.