There are over a hundred species of roses and thousands of cultivars. Roses have been cultivated since ancient times for their beauty and use.

The daffodil is the national flower of Wales, and is often worn on St. David's Day on March 1. (In Welsh, the daffodil is known as "Peter's Leek", cenhinen Bedr/Cenin pedr.)

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There are festivals all over the world to mark the blooming of cherry trees. In Japan, trees are watched carefully and festivals planned around their predicted bloom dates usually through March and April.

There are festivals all over the world to mark the blooming of cherry trees. In Japan, trees are watched carefully and festivals planned around their predicted bloom dates usually through March and April.

There are festivals all over the world to mark the blooming of cherry trees. In Japan, trees are watched carefully and festivals planned around their predicted bloom dates usually through March and April.

A favorite game and pastime is the blowing away of the seeds to make a wish or to consult the thoughts of a loved one.

Scientifically named Lupinus texensis, the bluebonnet is also called buffalo clover, wolf flower, and (by the Mexicans) el conejo. It was adopted as the official state flower by the Texas Legislature in 1901.

Hanami (花見?, lit. "flower viewing") is the Japanese traditional custom of enjoying the transient beauty of flowers, flowers ("hana") in this case almost always referring to those of the cherry ("sakura") or, less frequently, plum ("ume") trees. From the end of March to early May, sakura bloom all over Japan, and around the first of February on the island of Okinawa.

The California Poppy became the state flower in 1903.

Considered one of the greatest roses of its time, developed in 1935, this hybrid rose was in the process of being refined by French hybridizer Francis Meilland during the war. It was one item spirited away on some of the last planes to leave France before German occupation during World War II.

Considered one of the greatest roses of its time, developed in 1935, this hybrid rose was in the process of being refined by French hybridizer Francis Meilland during the war. It was one item spirited away on some of the last planes to leave France before German occupation during World War II.

Sweet William is a form of dianthus barbatus.

Around 490 plants grow wild in Iceland (see list of wild flowering plants and ferns in Iceland), a figure that includes both native plants and imported plants that have colonised the island, including clubmosses, ferns, flowering plants, and trees.

The species of lupine that can be seen in Iceland is called the “nootka lupine” and was introduced for purposes of soil fertilization. The flower helps the soil by turning atmospheric nitrogen (N2) into organic nitrogen through using specialized bacteria living in the flower’s roots.

Dryas octopetala, the mountain-avens, is an Arctic–alpine flowering plant in the family Rosaceae. It is a small prostrate evergreen subshrub forming large colonies. The specific epithet octopetala derives from the Greek octo (eight) and petalon (petal), referring to the eight petals of the flower, an unusual number in the Rosaceae, where five is the normal number.

The seed heads of sunflowers generally illustrate one of nature's mathematical series, the Fibonacci sequence, a set in which each number is the sum of the previous two.

Mustard plants are any of several plant species in the genera Brassica and Sinapis. Mustard seed is used as a spice. Grinding and mixing the seeds with water, vinegar, or other liquids, creates the yellow condiment known as prepared mustard. The seeds can also be pressed to make mustard oil, and the edible leaves can be eaten as mustard greens.

Chrysanthemum Day (菊の節句 Kiku no Sekku?) is one of the five ancient sacred festivals of Japan. It is celebrated on the 9th day of the 9th month. It was started in 910, when the Japanese imperial court held its first chrysanthemum show. Chrysanthemums are the symbol of the Imperial House of Japan.

The native red thistle species, Cirsium occidentale (also known as the Venus Thistle) and Cirsium arizonicum flourish on the West Coast of the United States.

The native red thistle species, Cirsium occidentale (also known as the Venus Thistle) and Cirsium arizonicum flourish on the West Coast of the United States.

The native red thistle species, Cirsium occidentale (also known as the Venus Thistle) and Cirsium arizonicum flourish on the West Coast of the United States.