Calla Lilies vs Regular Lilies: Understanding the Difference

One of the most common misunderstandings we untangle at TJ Flowers — a florist on the Upper East Side of Manhattan since 1988, at 1640 York Avenue — is the assumption that calla lilies and "regular" lilies are variations of the same flower. They aren't. They aren't even in the same botanical family. That single fact has real, practical consequences for choosing flowers: for weddings, for sympathy arrangements, for gifts to cat owners, and for how long the stems will last in your vase.

This guide walks through what calla lilies and traditional lilies actually are, when each is appropriate, and why the difference matters more than most people realize.

The Botanical Reality: They Aren't the Same Family

Calla lilies (Zantedeschia) are not true lilies at all. They belong to the Araceae family — the same family as peace lilies, anthuriums, and, strangely, taro. What looks like a single elegant petal is actually a modified leaf called a spathe wrapped around a central column (the spadix). A calla lily has no traditional petals.

Traditional or true lilies (Lilium) — Oriental lilies like Stargazer, Asiatic lilies, and Longiflorum (Easter lilies) — belong to the Liliaceae family. Each stem produces multiple open trumpet-shaped blooms with six actual petals (technically tepals), prominent stamens, and strong fragrance.

That one distinction cascades into every difference that follows: form, safety, symbolism, care, and use.

Form, Color, and Fragrance

Calla Lilies

• Single, trumpet-furled spathe per stem — clean, architectural, sculptural
• Stem length: 18-30 inches; mini callas available for bud vases
• Colors: white (classic), cream, yellow, blush pink, deep purple, burgundy, nearly black
• Fragrance: none. Calla lilies are entirely unscented.
• Form reads as: modern, minimalist, editorial, elegant

Traditional Lilies (Oriental, Asiatic, Longiflorum)

• Multiple blooms per stem — typically 3-6, opening sequentially
• Stem length: 20-36 inches
• Colors: white, pink, deep pink, red, orange, yellow; often bicolored with freckles
• Fragrance: strong. Oriental lilies especially (like Stargazer) fill a room.
• Form reads as: classic, abundant, fragrant, traditional

Wedding vs. Sympathy: Why the Use Differs

Here's where the two flowers genuinely part ways in American florist tradition.

Calla lilies have become the signature modern wedding flower for brides who want clean, sculptural, Art Deco-influenced design. A hand-tied bridal bouquet of 7-9 white calla lilies is one of the most requested minimalist designs in NYC. Callas also appear frequently in high-end corporate installations where architectural impact and absence of fragrance are assets — think hotel lobbies, law firm reception desks, and luxury retail.

Traditional lilies — particularly white Oriental and Longiflorum (Easter) lilies — carry strong sympathy and funeral associations in American culture. The white trumpet form has represented resurrection and the purity of a departed soul in Christian tradition for centuries. For that reason, many clients avoid white Oriental lilies at weddings in mixed religious groups or at celebratory events where the symbolism might feel heavy. Our funeral arrangements frequently use them, paired with white roses and soft greenery, because the symbolism is exactly right there.

Cat Safety: A Serious Difference

This one matters for any client with cats at home — and it's something most people don't know.

True lilies (Lilium, Oriental, Asiatic, Longiflorum, tiger, daylilies) are severely toxic to cats. Even a small amount of pollen, a petal, or water from the vase can cause acute kidney failure within 36-72 hours. This is not a mild GI upset — it is a medical emergency that routinely requires aggressive IV fluids at an emergency vet. The ASPCA and most veterinary organizations list true lilies as one of the most dangerous plants in American homes for cats.

Calla lilies are NOT true lilies and are generally considered safer for cats — they're not acutely kidney-toxic the way Liliums are. They contain calcium oxalate crystals that can cause oral irritation and drooling if a cat bites them, but they do not cause the life-threatening kidney failure that Liliums do. We still recommend keeping any cut flower out of feline reach, but the severity gap between the two categories is enormous.

The short rule: if the recipient has cats, avoid Oriental, Asiatic, and Longiflorum lilies. Calla lilies are a much better choice.

Side-by-Side Comparison

Criteria	Calla Lilies (Zantedeschia)	Traditional Lilies (Lilium)
Botanical family	Araceae	Liliaceae
Blooms per stem	1 (single spathe)	3 – 6 (sequential)
Fragrance	None	Strong (Orientals especially)
Price per stem (NYC retail)	$8 – $18 (standard), $3 – $5 (mini)	$6 – $12
Vase life	7 – 12 days	8 – 14 days (as blooms open sequentially)
Season	Year-round (imported)	Year-round (imported)
Best for	Modern weddings, architectural arrangements, cat households	Sympathy, traditional arrangements, fragrant rooms
Cat safety	Much safer — NOT kidney-toxic	SEVERELY kidney-toxic — avoid

Care Differences to Know

Calla lily stems are hollow and can split if cut too aggressively. Use a very sharp knife, cut at a 45-degree angle, and keep water levels shallow (just 2-3 inches) — deeper water causes the stems to rot quickly. Change water every two days.

Traditional lily stems benefit from being re-cut on arrival and from having the anthers (pollen-bearing stamens) gently pinched off as soon as each bloom opens. This both extends vase life and — critically — prevents rust-colored pollen stains on tablecloths, furniture, and clothing. Our peony care guide covers related principles that apply to traditional lilies as well.

When to Choose Which

Choose calla lilies when:

• You want a modern, architectural, minimalist look
• The recipient has cats
• You're sending to a hotel, corporate office, or luxury retail space (fragrance-free)
• The event aesthetic is Art Deco, modern, or editorial

Choose traditional lilies when:

• You want strong, fill-the-room fragrance
• The arrangement is for sympathy, a memorial, or a funeral service
• You want abundance and multiple blooms per stem for longer staged opening
• The recipient has no cats in the home

Frequently Asked Questions

Are calla lilies actually lilies?

No. Despite the name, calla lilies (Zantedeschia) are in the Araceae family, entirely separate from true lilies (Lilium). They just happen to share a common name from early botanical classification.

My recipient has a cat — can I send lilies?

Send calla lilies, not true lilies. Calla lilies are not kidney-toxic to cats the way Oriental, Asiatic, and Easter lilies are. The ASPCA considers true lilies one of the most dangerous plants in American homes for felines.

Do calla lilies have a scent?

No — calla lilies are essentially unscented, which is why they're popular for hotel lobbies and offices. If you want fragrance, choose Oriental lilies or pair callas with fragrant roses.

Why do lilies stain clothes?

The pollen from traditional lilies contains an orange-red pigment that bonds aggressively with fabric. If you or a florist remove the anthers (the pollen-bearing stamens) before the flowers fully open, you eliminate the staining problem entirely. Callas have no anthers in the traditional sense, so no staining.

Which lasts longer in a vase?

Traditional lilies often look good for longer (8-14 days) because they open sequentially, meaning new blooms appear as older ones fade. Calla lilies are simpler: one bloom per stem that holds beautifully for 7-12 days and then declines.

Order Lilies from TJ Flowers

Whether you need sculptural calla lilies for a corporate installation or classic Orientals for a sympathy tribute, call our Upper East Side shop or order online. We'll help you pick the right flower for the right moment.