Xochiquetzal is Flower Feather, the ever young and pretty goddess of flowers, love, pleasure and beauty. She is a patron of artists.

Xochiquetzal represents the sexual power of young women. In this way she is related to the Ahuitateteo and excess. She also resides over childbirth and pregnancy, relating her to mother-goddesses like Toci and Tlazolteotl.

Her twin is Xochipili. Her husband was Tlaloc, until Tezcatlipoca kidnapped her and she was forced to marry him.

Xochiquetzal is often displayed surrounded by flowers and butterflies, and accompanied by a hummingbird or an ocelotl.

In the tonalpohualli, Xochiquetzal rules over the last day, Xochitl (flower) and over trecena 1-Cuauhtli (eagle).

From: Here
The Aztec goddess of the earth, flowers, plants, games and dance, but mainly she is a goddess of love. She is also the patroness of artisans, prostitutes, pregnant women and birth. Originally Xochiquetzal ("Flower Feather") was associated with the moon.

This goddess is the most charming of the Aztec pantheon and her retinue consists of butterflies and birds. Every eight years a feast was held in her honor where the celebrants wore animal and flowers masks. She is the twin sister of the flower prince Xochipilli and sometimes mentioned as the wife of the rain god Tlaloc.

From: here

Xochiquetzal, the goddess who seduced a priest and then turned him into a scorpion as a mark of her power, was no soft touch She incarnated youth, love and beauty and was amorously pursued by several Aztec gods. Emblemised [characterised] by flowers and colourful feathers, Xochiquetzal was patroness of lovers and prostitutes. Unlike other fertility goddesses, she encouraged love-making as a means of pleasure, not reproduction, yet she had the power to absolve humans of sins that weren’t necessarily of a sexual nature. Wife of the water god, Tlaloc, and consort to the creator deity, Tezcatlipoca, Xochiquetzal lived in the Aztec paradise of Tamoanchan. She was widely worshipped and many great rituals were made in her honour; from incredible acts of sacrifice to sombre confessions.

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Xochiquetzal is pronounced Sho.chi.ket.sal. This name comes from two Náhuatl words: Quetzalli (quetzal [a bird of splendid feathers] or precious feather), and Xóchitl (flower).

Xochiquetzal was a creator of humans as well as intermediary between them and the gods. Frequently referred to as a facet of the female divine goddess, Tonacacíhuatl, from whose womb the first four Aztec gods were born, Xochiquetzal witnessed the creation of gods and humans. Although she was a mother herself, this goddess never grew old and always appeared in the full bloom of youth.

Xochiquetzal extended her patronage to many humans, mainly lovers, prostitutes, weavers and craftspeople. According to the historian, Noemi Quesada, this was because they could make pleasure or objects that were beautiful to behold.

Special festivities:
Atamalqualiztli - A large ceremony dedicated to the harvest. It took place during harvest once every eight years. Tepeílhuitl (also known as Hueypachtli) - the thirteenth festival month of the solar calendar. This festivity also celebrated the gods of pulque, a sacred alcoholic drink made from the Maguey cactus. Xochíhuitl - the second ceremony of the 260 day ritual calendar.

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For the rest (it's a longer article), see: Mexicolore-- Goddess of the Month: Xochiquetzal
Xochiquetzal was Goddess of:

Female Sexuality
Prostitutes
Pleasure
Love
Beauty
Flowers
Weaving
Young Mothers
Arts & Crafts
Domesticity
Silversmiths
Sculptors

Temples, Worship and Rituals of Xochiquetzal:
Xochiquetzal was honored at a festival every 8 years. A young woman was chosen by artisans to impersonate the goddess; she would be sacrificed, flayed, and her skin given to a man to wear while pretending to weave. Artisans would dance around the scene and then confess their sins to a statue of Xochiquetzal through bloodletting. She was also one of the goddesses impersonated during the Toxcatl festival, ritually married to a young man and kept in luxury for a year before being killed.


From: Here
In Aztec mythology, Xochiquetzal (Nahuatl pronunciation: [ʃotʃiˈketsaɬ]) was a goddess associated with concepts of fertility, beauty, and female sexual power, serving as a protector of young mothers and a patroness of pregnancy, childbirth, and the crafts practised by women such as weaving and embroidery. Unlike several other figures in the complex of Aztec female earth deities connected with agricultural and sexual fecundity, Xochiquetzal is always depicted as an alluring and youthful woman, richly attired and symbolically associated with vegetation and in particular flowers. By connotation, Xochiquetzal is also representative of human desire, pleasure, and excess, appearing also as patroness of prostitutes and artisans involved in the manufacture of luxury items.[1]

She was followed by a retinue consisting of birds and butterflies. Worshippers wore animal and flower masks at a festival, held in her honor every eight years.

Her twin was Xochipilli and her husband was Tlaloc, until Tezcatlipoca kidnapped her and she was forced to marry him. At one point, she was also married to Centeotl and Ixotecuhtli. By Mixcoatl, she was the mother of Quetzalcoatl.

Anthropologist Hugo Nutini identifies her with the Virgin of Ocotlan in his article on patron saints in Tlaxcala.[2]

In pre-Hispanic Maya culture, a similar figure is Goddess I.

From: Wiki
Also see:
(PDF) Xochiquetzal