If you love both <a href="https://nameberry.com/list/317/unique-baby-names">unique baby names</a> and flower names for girls, Amaryllis might be a perfect choice for you. 

A showier flower name than Lily, but in the same botanical family, Amaryllis is not as outre as it might at first sound. It was used in Greek poetry as the appellation of pure pastoral beauties; Amaryllis is the heroine of Virgil's epic poem Ecologues, after whom the flower was named. 

Other references are characters in the George Bernard Shaw play Back to Methuselah and The Music Man. James Bond-creator Ian Fleming had a half sister named Amaryllis Marie-Louise Fleming, who was a noted British cellist.

Amaryllis

Anemone is a floral name that relates to the ancient Greek myth of the famous love story of Aphrodite and Adonis, in which Aphrodite transforms her wounded lover's blood into a flower, the crimson anemone, whose blossoms are opened by the wind — accounting for its other name, windflower.
 This makes an interesting, if challenging, choice for someone seeing an unusual flower name.

Anemone

Literally meaning "beautiful lady" in Italian, Belladonna is the name of a poisonous flower also known as nightshade. This connection gives an otherwise flowery name a darker, more dramatic edge.

Belladonna

Bluebell is one flower name that is used very quietly. Geri "Ginger Spice" Halliwell joined her former Spice Sisters in creative baby-naming with this adventurous -- some might say outlandish -- choice. Distinctive and charming? Or better suited to a farmyard animal? Your call. 

Bluebell

This traditional Italian name could have a whole new life when viewed as a color name. 

Carmine

Cerulean is just beginning to be heard as a name. Though Cerulean works as a name for both genders; the fact that it's a majestic light blue makes it particularly appropriate for a boy. 

Cerulean

One of the rarest of the flower names, that of the blossom celebrated in Japan as a symbol of the sun and a possible object of meditation. One of the rare flower names counted among <a href="https://nameberry.com/list/351/names-for-autumn-babies">names for autumn babies</a>, Chrysanthemum is also one of the most unusual nature-themed <a href="https://nameberry.com/search/girls-names/c">girl names starting with C</a>.
 Chrysanthemum is the title of a 1991 children's picture book by the American writer and illustrator Kevin Henkes. The plot deals with a young mouse named Chrysanthemum, who loves her name until classmates tease her about it.

Chrysanthemum

Coriander

Corydalis

Yes, though it seems so extreme, girls were actually sometimes given this name a century ago; now it is so uncommon it would make a strong springtime statement. Biggest obstacle: the nickname Daffy. 
 The daffodil is the national flower of Wales, and in the language of flowers it symbolizes both respect and unrequited love.
 But if this all seems too much, you could just go with Daisy.

Daffodil

Dandelion

A rare, free-feeling flower name for the parent who wants to move far, far beyond Rose and Daisy. Named for German physician Friedrich Freese.

Freesia

A plausible color name, it was chosen by the singer Sting as a middle name for his daughter, after a character in the Gormenghast fantasy trilogy, of which he's a big fan.

Fuchsia

More uncommon and powerful than garden varieties like Rose and Lily. Named for Scottish botanist Dr Alexander Garden.

Gardenia

Garland is fragrant and celebratory, and also has a celebrity-tribute tie to the star of The Wizard of Oz.

Garland

The great American novelist sets this above many other surnames (and <a href="https://nameberry.com/list/329/nature-baby-names">nature names</a>, for that matter), but it's still an imposing and adventurous choice. Do nicknames Hawk or Thorne make it more approachable? The timid should stick with Nathaniel.

Hawthorne

Everybody knows Huckleberry Finn, the Mark Twain character named, Twain said, for the 19th century slang term for "humble." A few modern parents have put it on a birth certificate, including "Man Vs. Wild" star Bear Grylls, who, like many parents, will call the boy the much more manageable Huck. It was also the name of a child on TV's West Wing,

Huckleberry

Though it may not be as sweet and gentle as, say, Violet, the purple-hued Hyacinth still might hold some appeal for the parent seeking a truly unusual flower name. 
 
In Greek mythology, Hyacinthus was a Spartan youth accidentally killed by Apollo, from whose blood sprang a beautiful and fragrant flower, and it is also the name of several saints; Hyacinth became exclusively female in the nineteenth century. To the ancients, Hyacinth was, in addition to being a bluebell-like blossom, the name of a precious stone.
 
Hyacinth Bridgerton is the youngest child of the fictional Bridgerton family, named in alphabetical order from A-H. There is a character named Hyacinth Robinson in Henry James's The Princess Casamassima and Hyacinth Bucket is the social-climbing character on the British sitcom Keeping Up Appearances, with sisters named Daisy, Rose, and Violet. To underscore her pretentiousness, Hyacinth Bucket insisted that her last name be pronounced as "bouquet".
 
You might also consider the Spanish version, Jacinta.

Hyacinth

Honeysuckle

Like Violet, Lavender and Lilac, Ianthe is a purple flower name. Chosen by the poet Shelley for his daughter, Ianthe has a poetic, romantic, almost ethereal quality. In the ancient myth, she was the daughter of Oceanus, supreme ruler of the sea, and also a Cretan woman so beautiful that when she died the Gods made purple flowers grow around her grave.
 Iantha is also used.
 Ianthe was a favorite of the pastoral poets of the seventeenth century and then again in the early nineteenth. She appears in the works of Shelley, Barbara Pym and Georgette Heyer. Writer Richard Brautigan named his daughter Ianthe.

Ianthe

Lavender lags far behind sweet-smelling purple-hued sister names Violet and Lila, but is starting to get some enthusiastic attention from cutting-edge namers along with other adventurous nature names like Clementine and Marigold. 

 The flower's name derives from Latin lividus "bluish", influenced by lavō "wash" due to use of lavender in washing clothes. It has long been used in traditional medicine and in cooking for its sweet fragrance and soothing properties. But it also has a long history as a name, going back to the eighteenth century, when it was also used for boys. 

 Famous fictional namesakes include Lavender Brown, a witch character in the Harry Potter saga, and the eponymous heroine's best friend in Roald Dahl's Matilda.

Lavender

Lyrical, lively and bold, Leilani is a name that feels fresh, floral, and summery. Sharing sounds with the popular Lillian, Layla and Luna, Leilani is a fairly recent addition to the US Top 100. 
Derived from the Hawaiian elements of lei, meaning “flowers”, and lani, meaning “heavenly”, Leilani can literally be translated as “heavenly flower.” 
Alternatively, it might be interpreted as “royal child” because flower garlands worn round the neck are associated with children in Hawaii, and because lani is linked to majesty, and therefore high-birth and royalty. 
Leilani has been in and out of US Top 1000 since the 1930’s, with Bing Crosby’s song “Sweet Leilani” likely introducing it to many parents and inspiring their choices. 
While it did remain in use across the 20th century, it wasn’t until the mid-90’s that Leilani really began to make a steady but serious rise up the charts. Influenced perhaps by the glamor of American model Leilani Bishop, by Miss Great Britain Leilani Dowding, or by the Basic Instinct actress Leilani Sarelle, the name was in the Top 500 by 2001, and the Top 100 by 2020. 
Particularly popular in Hawaii, New Mexico, and South Carolina, Leilani is given to nearly 4000 babies in the US every year. Across the pond in the UK, it has seen sporadic usage, but recently rose to be within the Top 700. 
Connected to nature and to a place in Hawaii; familiar and well-rooted but with plenty of flair and freshness; musical and princessy with solid sounds and spark, Leilani ticks lots of boxes. With its nickname potential and popular L initial, it may well continue to climb the charts. 
Loving Leilani and want to learn more about Hawaiian names? This <a href=”https://nameberry.com/list/579/hawaiian-baby-names”> wonderful list</a> is a great place to get started, with some highlights including Iolani, Kakalina, Lillinoe and Luana.

Leilani

Larkspur

Lobelia

Magnolia, a sweet-smelling Southern belle of a name made famous via the iconic Edna Ferber novel and musical Showboat, is one of the latest wave of botanical names, along with unexpected blossoms Azalea and Zinnia. It is named for French botanist Pierre Magnol.
 Magnolia has been chosen for his daughter by Adrian Young of No Doubt—which happens to be a fabulous baby-naming consortium as well as a great musical group.
 In Showboat, the Magnolia character goes by nicknames Noa, Nollie, and Maggie.
 Magnolia charted on the popularity list almost every year from 1880 to 1940, topping at Number 420 in 1909—but it's now making a comeback.
 Magnolia Breeland is a character on the TV show Hart of Dixie, who happens to have a sister named Lemon and a father named Brick.
 Maminydjama Magnolia Maymuru is an Indigenous Australian model.

Magnolia

Marigold, once found almost exclusively in English novels and aristocratic nurseries, is beginning to be talked about and considered here. It has a sweet, sunny, quirky feel. The marigold was the symbol of the Virgin Mary.

 Marigold appears in several children's book titles, such as Magic for Marigold, Once Upon a Marigold and Marigold in Godmother's House, and in the adult Quartet in Autumn by Barbara Pym. On the TV show 1600 Penn, Marigold was the President's young daughter. 

 The name got a big boost from its use in the period drama Downton Abbey, in which it belongs to a sweet little girl – which no doubt helped to endear parents to the name! It has risen dramatically since then, and recently entered the Top 1000 for the first time in 2022. We expect Marigold to be one to look out for as parents are looking for unique botanical names now that the previously offbeat Magnolia and Juniper are feeling less fresh.

Marigold

Mazarine is a deep blue color also used as a first name in honor of Cardinal Mazarin, a leader of France in the 17th century.  As a first name, Mazarine is as charming as it is unusual.

Mazarine

Mahogany

Nightingale

Nutmeg

Oleander

Literary heritage: the "Loony Tunes" girlfriend of Porky Pig.  But with the increasing popularity of all kinds of unusual botanical names, Petunia may be a name we start to hear more of.  Perhaps-more-pleasing Petunia alternatives: Petal, Posy, Poppy.

Petunia

A quaint and quirky flower name, until recently considered a bit too prim for most American classrooms but brought back to life in recent years by the attractive character of Primrose "Prim" Everdeen in the Hunger Games series. In the Top 300 girl names in England and Wales and on Nameberry, Primrose remains rare in the US, but is made more accessible by a raft of sweet nickname options, including Rosie and Posy.

 The flower name Primrose derives from Latin prima rosa, meaning "first rose", since primrose flowers are among the first to appear in early spring, heralding the coming of better weather. Primrose also has an alternative history as a Scottish surname deriving from the place name Penrhos, from the Welsh words pren "tree" and rhos "moor." The spelling was later altered due to association with the flower.

 In the H. E. Bates book and 90's British TV series, The Darling Buds of May, there is a character named Primrose Violet Anemone Iris Magnolia Narcissa Larkin, who has twin sisters named Zinnia and Petunia.

Primrose

Primula is related to Primrose, the name and the flower, and would make a quirky yet charming (or is it charming yet quirky?) botanical name for a first daughter.

Primula

Despite appearances, Rosemary is not a "smoosh" name, not even a traditional one. The name derives from two Latin terms "Ros" meaning ‘dew’ and "Marinus" "meaning "of the sea". The plant was termed ‘dew of the sea’ due to its salty texture and its ability to thrive in coastal climes. Only after the Middle Ages did the English names of Rose and Mary become interchanged with the name Rosmarinus and give us the modern name we use today.
 In ancient legend, Rosemary was draped around Aphrodite when she rose from the sea. It was regarded then as beneficial in strengthening the memory and became a symbol for faithful lovers. In Hamlet, Ophelia says "There's Rosemary, that's for remembrance; pray, love, remember."
 The name was long associated with George Clooney's aunt, the great pop singer Rosemary; less pleasant associations are with the 1967 movie Rosemary's Baby.
 A common variation is Rosemarie; many parents are now looking to the stand-alone nickname Romy.

Rosemary

This name of a giant tree, itself named for a nineteenth-century Cherokee who invented a way to write his tribe's language, makes a strong, stately statement. 

Sequoia

Solrose

A hardwood tree native to Africa, India and other tropical regions, which bears sweet pod-shaped fruits which are used as a flavoring in many world cuisines, including Indian and Filipino. A rare and intriguing nature name which could honor an ancestral Tammy or Tamar.

Tamarind

Also know as the salt cedar, a plant known for enduring harsh conditions. This makes Tamarisk an intriguing nature name, suggesting resilience and strength, similar to the name Oak for boys.

Tamarisk

Tarragon

Trillium

A frilly southern-accented flower name yet to be planted on many birth certificates. In the language of flowers, the wisteria is a symbol of devotion. It is named for American horticulturalist John Caspar Wister.

Wisteria

Zephyranth

Nemorosa's list "Names from Nature - Long & Fussy" of 43 great name ideas: Amaryllis - Zephyranth!