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Plant Profiles · Genus Deep Dive

Alocasia.

Eighty species across Southeast Asia, the Western Pacific, and tropical Australia. The most photographed houseplant of the past five years and the one that kills the most newcomers. The reputation for difficulty traces to one misunderstood thing: these plants go dormant, and most growers read dormancy as death. We're going to take it apart, one specimen at a time.

What it is

A working compendium

A genus deep dive built the way the Guild builds everything. Science where the science is settled, opinions where they have to be, the substrate ratio at the end. Anatomy and biogeography for context. Species profiles for the plants you'll actually grow. The dormancy question answered in plain English. Cultivar entries for the variegated world. The elephant ear disambiguation that no one else publishes correctly.

Who it's for

Apprentices and Growers

For first-plant Apprentices about to buy a Polly and assume it's easy. For Growers who've lost a Frydek and want to know what actually happened. For anyone who's been told their plant died when the corm was still alive underground.

How it's written

Editorial, not whimsical

Latin names and a year of description where they help, plain English where they don't. Species profiles run on what the plant actually wants, not what makes a good Instagram caption. Specimens from the Petruscio collection show up in callouts. The plant is the subject; the grower is the witness.

Section 01 · Understanding the genus

The framework.

Three essays that do the theoretical lifting before you meet a single plant. Read the dormancy essay first if nothing else — it's where most Alocasia losses begin.

Alocasia anatomy specimen with corm cross-section and labeled features on weathered walnut Essay · Live

Field Manual · Genus essay

What Makes an Alocasia, an Alocasia

The corm underground is not decoration. The sagittate leaf shape is not arbitrary. The geniculum is a working joint. Anatomy is where every Alocasia care decision actually comes from, and where the dormancy reflex starts.

Published Growers Educators
Antique map of Southeast Asia with Alocasia leaves placed at geographic origin points Essay · Biogeography

Field Manual · Genus essay

The Eighty Species of Southeast Asia

The genus is Asian. Not American, not African — a strictly Indomalayan and Western Pacific lineage. Borneo and the Philippines hold most of the diversity. The plant on your shelf is a tropical species behaving as a tropical species, which is to say cyclically.

Researching
Three terracotta pots in sequence showing active growth, dormancy, and corm survival Essay · The hard question

Field Manual · Genus essay

The Dormancy Question

The single biggest source of "my Alocasia died" reports is dormancy mistaken for death. The plant retracts to a single survivor leaf or fully to the corm, the grower throws it out, the corm was still alive. What dormancy is, how to recognize it, how to ride it out, and when it really is dead.

Drafting Anchor

Section 02 · Species profiles

Plants worth knowing.

Per-species deep dives. Wild origin, physical description, what the plant actually wants in cultivation, the moods that mean dormancy versus the moods that mean trouble. Editorial-pure — no commercial CTAs.

Alocasia Frydek velvet emerald leaves with white midrib veining Profile · Live

Profile · Cormous · sect. Alocasia

Alocasia Frydek: The Velvet Aroid That Tests Your Patience

Alocasia micholitziana 'Frydek'. Sulawesi native. Velvet emerald leaves with sharp white midrib veining. The Alocasia profile already on the Guild — read this one first if you're new to the genus.

Published Growers
Alocasia Polly with dark sagittate leaves and silver veining in a glazed pot beside a sunlit window In the queue

Profile · The famous hybrid

Alocasia 'Polly': The Hybrid That Isn't a Species

The most-sold Alocasia in North America, named for the Amazon Nursery in Florida that introduced it in the 1950s. Not from the Amazon, not a real species — a hybrid of sanderiana and longiloba. The plant that demystifies how the houseplant trade names things.

Drafting
Alocasia reginula Black Velvet macro on weathered walnut with silver veining In the queue

Profile · Compact velvet

Alocasia Reginula: The Black Velvet From Sabah

Sabah, Borneo. The small one. Slow-growing, jet-black velvet leaves with silver-white veining, naturally compact even at maturity. The Alocasia for people who want one beautiful pot, not a forest, and the one most often mistaken for ready-to-die.

Researching
Two Alocasia baginda leaves side by side — Dragon Scale and Silver Dragon cultivars In the queue

Profile · Textured leaf

Alocasia Baginda: The Dragon Scales and Silver Dragons

Borneo native, two famous cultivars from one species. Dragon Scale has deep ridged texture and forest-green color; Silver Dragon has the same texture in pale silver-gray. The textured leaves are the most photographed in the entire genus, and the most often killed by misreading sheen as dehydration.

Researching
Alocasia zebrina with dramatically zebra-striped petioles beside a sunlit window In the queue

Profile · The architectural one

Alocasia Zebrina: The Striped Petiole

Philippine endemic. Lance-shaped leaves on dramatically zebra-striped petioles, like the plant is wearing dress socks. Looks like a sculpture, not a houseplant. The species that taught the trade that Alocasia stems can be the main event.

Researching
Alocasia cuprea copper-iridescent leaf macro on weathered walnut In the queue

Profile · Iridescent leaf

Alocasia Cuprea: The Copper Mirror

Borneo native. Copper-iridescent leaves with deep ridge sculpting, iridescence powered by the same photonic-crystal mechanism that gives Begonia pavonina its blue shimmer. The plant that proves "metallic" in the trade can be literal optical physics, not a description.

Researching
Alocasia sanderiana ribbon-leaved kris plant in terracotta pot by a sunlit window In the queue

Profile · The endangered ribbon

Alocasia Sanderiana: The Kris Plant of the Philippines

Endemic to one island in the Philippines, IUCN Critically Endangered in the wild. The ribbon-leaved aroid named after a Malay dagger. The plant most often sold as "Alocasia Polly" is a hybrid of this species — the actual sanderiana is rare, slow, and worth the wait.

Researching
Mature Alocasia macrorrhizos with enormous bright-green sagittate leaves In the queue

Profile · The giant · type species

Alocasia Macrorrhizos: The Giant That Named the Genus

The type species. Native to Indomalaya, reaches four meters in habitat. The edible corm is "ape" or "elephant ear taro" in Pacific cuisine. The plant Schott looked at in 1839 when he split Alocasia from Colocasia. The 'Stingray' cultivar comes from this species, and it deserves an entry of its own.

Researching

Section 03 · Variegated Cultivar Library

The four faces of variegation.

Variegated Alocasias behave like variegated Monsteras — chimeric, unstable, dazzling, demanding. Treat each entry as a guide to a way of growing, not a single specimen.

Single Alocasia Frydek Variegated leaf with cream chimeric variegation on velvet emerald In the queue

Variegated Cultivar · Lineage 01

The Frydek Variegated Group: Chimeric Cream on Velvet Green

Alocasia micholitziana 'Frydek' with chimeric variegation. Cream-yellow sectors on the velvet green ground that makes Frydek famous. Unstable like Monstera Albo. Propagation requires balancing every division on the green-vs-cream ratio that keeps the corm alive.

Researching
Alocasia Polly Variegated leaf showing chimeric cream sectoral variegation In the queue

Variegated Cultivar · Lineage 02

The Polly Variegated Group: The Most Unstable of the Variegated Alocasias

Variegated form of the famous hybrid. Particularly unstable — reverts often, throws all-green growth, demands the highest light tolerance of the variegated lineages to maintain the pattern.

Researching
Alocasia reginula Black Velvet Variegated leaf with cream sectors on jet-black velvet In the queue

Variegated Cultivar · Lineage 03

The Reginula Variegated Group: Variegated Black Velvet

Variegated form of Alocasia reginula 'Black Velvet'. Rarest of the variegated Alocasias in the trade. Cream sectors on the jet-black ground are unlike anything else in the genus. The collector's plant of the moment, with the price tag to match.

Researching
Alocasia macrorrhizos Variegated leaf showing bold cream-and-green chimeric variegation In the queue

Variegated Cultivar · Lineage 04

The Macrorrhizos Variegated Group: The Giants With Splash

Variegated form of the type species. Comes in cream-and-green and pure-cream sport forms, including the famous 'Sport' that hovers somewhere between rare and rumor. The biggest variegated Alocasia you can grow.

Researching

Section 04 · The Disambiguation Entry

Four genera all called "Elephant Ear."

Walk into any garden center and you'll find tubers labeled simply "Elephant Ear." That label is wrong four ways at once. Alocasia is one of four unrelated genera sold under the same common name, and each one wants a different thing.

Colocasia (Taro) is the plant most often confused with Alocasia. Same family, different genus. Water-loving — some species are bog plants. Full sun tolerant. Goes fully dormant in temperate winters by design. The edible corm is the original taro of Pacific cuisine.

Xanthosoma (Yautia) is the New World cousin. Native to the Americas, not Asia. Edible, similar growth habit to Colocasia, less commonly cultivated indoors. The third "elephant ear" you'll see at the garden center.

Caladium is a completely different aroid genus. Paper-thin leaves, summer-bulb herbaceous, fully dormant in winter (tuber storage), bright indirect light. Most often confused with Alocasia by people who see the leaf shape and stop looking.

Selling someone an "elephant ear" without telling them which genus they bought is the consumer-experience failure the Guild names and fixes. The full disambiguation entry walks through identification, care divergence, and what to do if you bought the wrong one.

The full disambiguation →
Four-way side-by-side specimen comparison of Alocasia, Colocasia, Xanthosoma, and Caladium leaves with scientific labels