Lavender

English lavender(?),  Lavandula angustifolia

One of the most well-known and cultivated aromatic shrubs, lavender comes in a wide variety of species and commercial uses. Lavender can be separated into three main groupings: English lavenders, non-English lavenders, and Lavandins, also known as English lavender hybrids. Each one has its own purpose, whether in terms of gardening tolerances or purpose such as for cooking or for use as an essential oil. The effectiveness of lavender for anxiety has been very thoroughly researched. While it is sometimes recommended for other uses such as colic, toothache, vomiting, and dementia among other concerns, the amount of evidence to back up these claims is still insufficient.