Magnolia (Magnolia officinalis)

Ashwagandha (Withania somnifera), sometimes called “Indian ginseng,” is a sturdy shrub growing to about 5 ft (1.5 m) with oval leaves, greenish or yellow flowers, and small, round fruits. NCCIH says some preparations may help insomnia and stress, but there isn't enough evidence to know whether it helps most other conditions.

Bacopa, also known as Water Hyssop or Brahmi, is a creeping succulent perennial that can grow to about 20 inches. It features spatula-shaped fleshy leaves and pale blue or white flowers on slender stalks. It thrives in marshlands and along the edges of mangrove swamps in warmer temperate and tropical climates, especially southern Asia, where it forms dense mats on mudflats.

Borage (Borago officinalis) is a coarse, hairy annual that grows to about 2 ft (60 cm), featuring a succulent stem, large basal leaves, and distinctively bright blue star-shaped flowers. The seeds yield an oil rich in gamma-linolenic acid (GLA), a polyunsaturated fatty acid.

California poppy (Eschscholzia californica) is an annual or short-lived perennial with finely divided leaves and vibrant orange, yellow, pink, or red blossoms. It is related to the opium poppy.

Catnip is a downy, aromatic perennial growing to 3 feet with heart-shaped, gray-green leaves and whorls of white flowers marked with purple spots. Native to Europe and naturalized in North America, it grows in dry wayside places and mountainous regions up to altitudes of 5,000 feet. The plant is gathered when in flower during summer and autumn. Catnip has an excitatory effect on cats.

Jasmine (Jasminum officinale) is a slender evergreen climber, growing up to around 20 ft (6 m), noted for its dark green compound leaves and sweetly scented, tubular white flowers. The blossoms yield a prized essential oil.

Kava (Piper methysticum), a member of the pepper family native to the South Pacific, has been made into ceremonial and medicinal drinks by Pacific Islanders for thousands of years. Kava products are promoted for anxiety and other health conditions; NCCIH says kava supplements may help anxiety, but there isn't enough evidence to show whether kava helps any other condition.

Lavender (Lavandula officinalis, also known as L. angustifolia) is a small, perennial shrub that can grow about 3 ft (1 m) high, characterized by its narrow, silver-green leaves and spiked violet-blue flowers. Renowned for its sweet aroma, lavender has a long history in traditional medicine for improving mood and sleep, and NCCIH says it is promoted today for calming anxiety and stress. NCCIH says studies suggest an oral lavender oil product might help anxiety, but more high-quality research is needed to reach reliable conclusions.