Willow in the context of "Aravah (Sukkot)"

Medicinal plants, also called medicinal herbs, have been discovered and used in traditional medicine practices since prehistoric times. Plants synthesize hundreds of chemical compounds for various functions, including defense and protection against insects, fungi, diseases, against parasites and herbivorous mammals.

The earliest historical records of herbs are found from the Sumerian civilization, where hundreds of medicinal plants including opium are listed on clay tablets, c. 3000 BC. The Ebers Papyrus from ancient Egypt, c. 1550 BC, describes over 850 plant medicines. The Greek physician Dioscorides, who worked in the Roman army, documented over 1000 recipes for medicines using over 600 medicinal plants in De materia medica, c. 60 AD; this formed the basis of pharmacopoeias for some 1500 years. Drug research sometimes makes use of ethnobotany to search for pharmacologically active substances, and this approach has yielded hundreds of useful compounds. These include the common drugs aspirin, digoxin, quinine, and opium. The compounds found in plants are diverse, with most in four biochemical classes: alkaloids, glycosides, polyphenols, and terpenes. Few of these are scientifically confirmed as medicines or used in conventional medicine.

Söğüt (Turkish pronunciation: [ˈsœ.yt], lit. 'willow') is a town in Bilecik Province, Turkey. It is the seat of Söğüt District. Its population is 13,566 (2021). The mayor is İsmet Sever (MHP), elected in 2019.

Söğüt is notable as the founding location and first capital of the Ottoman Empire from 1281 to 1335.

Salix babylonica (Babylon willow or weeping willow; Chinese: 垂柳; pinyin: chuí liǔ) is a species of willow native to dry areas of northern China, Korea, Mongolia, Japan, and Siberia but cultivated for millennia elsewhere in Asia, being traded along the Silk Road to southwest Asia and Europe.

Palm Sunday is the Christian moveable feast that falls on the Sunday before Easter. The feast commemorates Christ's triumphal entry into Jerusalem, an event mentioned in each of the four canonical Gospels. Its name originates from the palm branches waved by the crowd to greet and honor Jesus Christ as he entered the city. Palm Sunday marks the first day of Holy Week; in Western Christianity, this is the beginning of the last week of the solemn season of Lent, preceding Eastertide, while in Eastern Christianity, Holy Week commences after the conclusion of Great Lent.

In most Christian rites, Palm Sunday is celebrated by the blessing and distribution of palm branches (or the branches of other native trees), representing the palm branches that the crowd scattered before Christ as he rode into Jerusalem. These palms are sometimes woven into crosses. The difficulty of procuring palms in unfavorable climates led to the substitution of branches of native trees, including box, olive, willow, and yew.

A carr is a type of waterlogged wooded terrain that, typically, represents a succession stage between the original reedy marsh and the likely eventual formation of forest in a sub-maritime climate. Carrs are wetlands that are dominated by shrubs rather than trees. The carr is one stage in a hydrosere: the progression of vegetation beginning from a terrain submerged by fresh water along a river or lake margin. In sub-maritime regions, it begins with reed-marsh. As the reeds decay, the soil surface eventually rises above the water, creating fens that allow vegetation such as sedge to grow. As this progression continues, riparian trees and bushes appear and a carr landscape is created – in effect a wooded fen in a waterlogged terrain. At this stage, overall, unlike the overwhelming acidity of decaying reeds, the pH is not too acidic and the soil is not too deficient in minerals, making a habitat for endemic and other wildlife. Characteristic water-tolerant trees include alder and willow.

Alameda County (/ˌæləˈmiːdə/ AL-ə-MEE-də) is a county located in the U.S. state of California. As of the 2020 census, the population was 1,682,353, making it the 7th-most populous county in the state and 21st most populous nationally. The county seat is Oakland. Alameda County is in the San Francisco Bay Area, occupying much of the East Bay region.

The Spanish word alameda means either "a grove of poplars...or a tree lined street". The name was originally used to describe the Arroyo de la Alameda; the willow and sycamore trees along the banks of the river reminded the early Spanish explorers of a road lined with trees.

Lulav (Hebrew: לוּלָב‎ [luˈlav]) is a closed frond of the date palm tree. It is one of the Four Species used during the Jewish holiday of Sukkot. The other Species are the hadass (myrtle), aravah (willow), and etrog (citron). When bound together, the lulav, hadass, and aravah are commonly referred to as "the lulav".

Sukkot, also known as the Feast of Tabernacles or Feast of Booths, is a Torah-commanded Jewish holiday celebrated for seven days, beginning on the 15th day of the month of Tishrei. It is one of the Three Pilgrimage Festivals on which Israelites were commanded to make a pilgrimage to the Temple in Jerusalem. Biblically an autumn harvest festival and a commemoration of the Exodus from Egypt, Sukkot's modern observance is characterized by festive meals in a sukkah, a temporary wood-covered hut, and the taking of the four species.

The names used in the Torah are "Festival of Ingathering" (or "Harvest Festival", Hebrew: חַג הָאָסִיף, romanized: ḥag hāʾāsif) and "Festival of Booths" (Hebrew: חג הסכות, romanized: Ḥag hasSukkōṯ). This corresponds to the double significance of Sukkot. The one mentioned in the Book of Exodus is agricultural in nature—"Festival of Ingathering at the year's end" (Exodus 34:22)—and marks the end of the harvest time and thus of the agricultural year in the Land of Israel. The more elaborate religious significance from the Book of Leviticus is that of commemorating the Exodus and the dependence of the Israelites on the will of God (Leviticus 23:42–43).