The October birth flowers are the marigold and the cosmos. The marigold symbolizes warm, fierce, undying love, and the cosmos symbolizes order, peace, and serenity. Both are sun-loving annuals that bloom into fall.
The October birth flower has two options: the marigold, the primary flower, and the cosmos, the second. The Tagetes marigold and the cosmos are both native to Mexico, where the marigold has a central role in DÃa de los Muertos, the Day of the Dead, observed on November 1 and 2.
The name “marigold” also covers two different plants, which matters for gardeners, gift buyers, and pet owners. This page covers each flower’s meaning, name, species, uses, and pet safety, and compares the two.
Table of Contents
What is the October birth flower?
The October birth flower is the marigold, with the cosmos as the second October flower. The table compares the two.
| Attribute | Marigold | Cosmos |
|---|---|---|
| Rank for October | Primary birth flower | Second birth flower |
| Meaning | Warm or fierce undying love, contentment | Order, peace, serenity |
| Genus | Tagetes (American usage) or Calendula (pot marigold) | Cosmos |
| Plant family | Asteraceae (daisy family) | Asteraceae (daisy family) |
| Native range | Tagetes erecta: Mexico and Guatemala | Mexico and southwest North America |
| Plant type | Annual | Annual that readily reseeds |
| Height | 6 inches to 5 feet, depending on species | 2 to 4 feet |
| Common colors | Orange, yellow, gold, red | Pink, white, lavender, maroon |
| Pet safety | Tagetes: mild irritant; Calendula: non-toxic | Check the ASPCA database for the exact species |
The meanings come from The Old Farmer’s Almanac, which describes the marigold as “often given as a sign of warm or fierce undying love” and the cosmos as a symbol of “order, peace, and serenity.”
The marigold: primary October birth flower
The marigold is the main October birth flower, a bright orange, yellow, or gold annual that blooms through summer and into fall. The Old Farmer’s Almanac describes marigolds and cosmos as “colorful annuals that thrive in full sun.”
What does the marigold symbolize?
The marigold symbolizes warm or fierce undying love, according to The Old Farmer’s Almanac. The same source notes that marigolds are also given to express contentment with someone. In Mexico, the marigold carries a different association: remembrance of the dead during DÃa de los Muertos.
Two different plants called marigold
“Marigold” refers to two separate genera, Tagetes and Calendula, and both appear in October birth flower lists. American gardeners usually mean Tagetes, which includes the French marigold and the African or Mexican marigold. British gardeners often mean Calendula officinalis, the pot marigold. The two belong to the same plant family, Asteraceae, but differ in appearance, origin, and pet safety.
| Attribute | Tagetes marigold | Calendula (pot marigold) |
|---|---|---|
| Common names | French marigold, African marigold, Mexican marigold, cempasúchil | Pot marigold, garden marigold, Mary bud |
| Where the name is most common | United States | United Kingdom |
| Flower form | Dense, ruffled or pom-pom heads | Flat, daisy-like heads |
| Link to DÃa de los Muertos | Yes, Tagetes erecta | No |
| ASPCA / Pet Poison Helpline status | Mild irritant to dogs and cats | Non-toxic to dogs and cats |
The Old Farmer’s Almanac counts about 50 species of Tagetes marigolds, ranging from 6 inches to 5 feet tall.
Marigolds and DÃa de los Muertos
The Mexican marigold, Tagetes erecta, is the traditional flower of DÃa de los Muertos. According to the Royal Botanic Gardens, Kew, the blooms decorate ofrendas, the altars to the dead, and their “bright orange colour and strong scent” are “thought to help guide the spirits of the dead home.” Kew notes that the flowers have played a role in rituals in Central America since Aztec times.
The plant’s Nahuatl name, cempoalxóchitl, translates to “twenty flowers,” according to Kew. In modern Mexican Spanish, the flower is called cempasúchil.
DÃa de los Muertos is observed on November 1 and 2, so marigold season for ofrendas peaks in late October. The table shows the dates for 2026 and 2027.
| Year | November 1 | November 2 |
|---|---|---|
| 2026 | Sunday, November 1, 2026 | Monday, November 2, 2026 |
| 2027 | Monday, November 1, 2027 | Tuesday, November 2, 2027 |
Other uses of the marigold
Marigolds have uses beyond decoration, according to Kew. Tagetes erecta has been used in traditional medicine for thousands of years, including for digestive and respiratory complaints. Dried petals are fed to livestock, including chickens and shrimp, to enhance color, and the flowers produce a yellow dye for textiles.
The cosmos: second October birth flower
The cosmos is the second October birth flower, a tall, airy annual with daisy-like flowers in pink, white, lavender, and maroon. According to the North Carolina Extension Gardener Plant Toolbox, the common garden cosmos, Cosmos bipinnatus, is native to Mexico and southwest North America and grows 2 to 4 feet tall.
What does the cosmos symbolize?
The cosmos symbolizes order, peace, and serenity, according to The Old Farmer’s Almanac. The meaning matches the plant’s name.
Where the name “cosmos” comes from
The genus name Cosmos comes from the Greek word kosmos, meaning order or harmony. North Carolina Extension links the name to the flower’s orderly, evenly spaced petals and notes that Spanish priests introduced cosmos to cultivation. The same Greek word gives English “cosmos” in the sense of the ordered universe.
Cosmos in the garden
Cosmos is a low-maintenance annual that readily reseeds and has a long bloom season. North Carolina Extension lists its bloom time as spring, summer, and fall, and notes that it attracts pollinators, birds, and butterflies. The Old Farmer’s Almanac describes cosmos as semi-tall annuals usually planted along garden borders.
Marigold vs. cosmos: which October flower to choose
Choose the marigold for a bold, warm-colored gift or a DÃa de los Muertos display, and the cosmos for a soft, pastel bouquet or a pollinator garden. The table compares the two by use.
| Use | Better choice | Reason |
|---|---|---|
| Birthday bouquet in warm colors | Marigold | Orange, gold, and red shades suit fall |
| Pastel birthday bouquet | Cosmos | Pink, white, and lavender flowers |
| DÃa de los Muertos ofrenda | Marigold (Tagetes erecta) | The traditional ofrenda flower |
| Home with pets | Pot marigold (Calendula) | Non-toxic to dogs and cats |
| Pollinator garden | Cosmos | Attracts bees, butterflies, and birds |
| Low-maintenance garden | Either | Both are easy annuals that thrive in full sun |
Are October birth flowers safe for pets?
Pot marigolds are non-toxic to pets, while Tagetes marigolds can cause mild irritation. The ASPCA lists the pot marigold, Calendula officinalis, as non-toxic to dogs and cats.
The Pet Poison Helpline rates Tagetes marigolds as mildly toxic to dogs and cats and notes that they “may cause mild irritation to the gastrointestinal tract when ingested,” and that the sap may irritate skin.
Check the exact plant before bringing October flowers into a home with pets. A bouquet labeled only “marigold” could contain either genus.
Other October birthday symbols
People born in October have two birthstones: opal and tourmaline. Jewelers of America lists both on the modern birthstone list, which was standardized in 1912. Tourmaline comes in many colors, including pink and orange shades that match cosmos and marigolds.
| October symbol | Item |
|---|---|
| Primary birth flower | Marigold |
| Second birth flower | Cosmos |
| October Birthstones | Opal, tourmaline |
| Holiday linked to the marigold | DÃa de los Muertos, November 1 and 2 |
The months on either side have different flowers. The September birth flower is the aster, with the morning glory as the second flower, and the November birth flower is the chrysanthemum, the only flower for that month.
What the October birth flower is not
The October birth flower is not the marsh marigold, a spring-blooming wetland plant in the buttercup family that shares the name but is unrelated to Tagetes or Calendula.
The cosmos is also not the chocolate cosmos, a different Cosmos species sold for its dark flowers, although both belong to the same genus. Finally, the October birth flower is not the flower for the Libra or Scorpio zodiac signs, which follow star sign dates that change in late October.
Frequently asked questions
What is the birth flower for October?
The birth flower for October is the marigold, with the cosmos as the second October flower. Both appear in American and British birth flower lists. The marigold symbolizes warm or fierce undying love, and the cosmos symbolizes order, peace, and serenity, according to The Old Farmer’s Almanac.
What does the October birth flower mean?
The marigold, October’s primary birth flower, means warm or fierce undying love and contentment. The cosmos, the second October flower, means order, peace, and serenity, a meaning that matches its Greek name, kosmos. In Mexico, the marigold also symbolizes remembrance during DÃa de los Muertos.
Why are marigolds used for DÃa de los Muertos?
Marigolds decorate DÃa de los Muertos altars because their bright orange color and strong scent are thought to guide the spirits of the dead home, according to Kew. The flower, Tagetes erecta, has been used in Central American rituals since Aztec times. DÃa de los Muertos falls on November 1 and 2.
Are marigolds toxic to cats and dogs?
It depends on the marigold. The ASPCA lists the pot marigold, Calendula officinalis, as non-toxic to dogs and cats. The Pet Poison Helpline rates Tagetes marigolds, including French and African marigolds, as mildly toxic, with possible stomach upset and skin irritation from the sap.
Where does the cosmos flower come from?
The garden cosmos, Cosmos bipinnatus, is native to Mexico and southwest North America, according to North Carolina Extension. Its name comes from the Greek word kosmos, meaning order or harmony, and Spanish priests introduced it to cultivation. It grows 2 to 4 feet tall.
What is the October birthstone?
October has two birthstones, opal and tourmaline, according to Jewelers of America. The modern birthstone list was standardized in 1912 by the American National Retail Jewelers Association. Tourmaline’s pink and orange varieties pair well with cosmos and marigold colors.
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