The Grand Crinum
Drive the Gulf Coast and you’ve seen this plant, whether or not anybody told you what it was. It’s in front of banks and beach condos and gas stations from Florida to Texas — a great fountain of broad dark leaves four feet across, a thick trunk-like neck standing up out of the ground, and a burst of white spidery flowers on top.
Crinum asiaticum is the grand crinum lily, and it earns the adjective. Up to about four feet tall, twenty or thirty leaves to a metre long and four to five inches wide, and an umbel carrying ten to twenty-four fragrant white flowers with narrow petals that roll back on themselves. The bulb’s base runs six to fifteen inches across.
It doesn’t look like the other crinums I sell. The milk and wines and the Ellens make trumpets. This one makes something closer to a spider lily, and it makes the plant the main event rather than the flower.
Poison Bulb — and I Mean It
The other common name for this plant is poison bulb, and I’m going to be plain about it rather than bury it under the care section.
Every part of the plant is toxic, and the bulb is the worst of it. It carries a load of alkaloids — lycorine and tazettine among them. Eaten, it causes vomiting, abdominal pain, severe diarrhea, irregular breathing, rapid pulse and fever. In sufficient quantity it can cause nervous-system paralysis and death. Some reports say the sap can irritate skin on contact.
Now, some perspective, because I’m not trying to scare you off a good plant. Most of the bulbs I sell are toxic in some measure — that’s why deer leave them alone, and it’s why crinums as a group get sold as critter-proof. Narcissus will make you sick. Nobody thinks twice about it.
What’s different here is degree and it’s the name. Somebody looked at this specific plant, out of a whole genus of mildly poisonous bulbs, and decided this was the one worth calling the poison bulb. That’s a judgment made by people who lived with it.
So: it’s a landscape plant, not a food plant, and it’s a fine landscape plant. But if you have a child who puts things in their mouth, or a dog who digs and chews, put this somewhere else — or plant something else. The bulb is big and fleshy and it looks a little like an onion, which is precisely the problem with the whole family. I’d rather tell you now than have you find out.
Where It’s From, and Where It Went
Crinum asiaticum is native to East Asia, tropical Asia, Australia, and islands across the Pacific and western Indian oceans. That’s an enormous range, and it’s a coastal plant across most of it — the kind of thing that grows where salt spray and sand would kill something else.
It got out. Kew’s records have it naturalized in Mexico, the West Indies, Madagascar, the Chagos Archipelago, a long list of Pacific islands — and in the United States, in Florida and Louisiana. Not planted there. Naturalized. It arrived as an ornamental and decided to stay.
That last detail is the one I’d underline for a Gulf Coast gardener. When Kew lists your state as part of a plant’s introduced range, the plant is telling you something about your climate that no hardiness map will. Louisiana is close enough to tropical Asia, as far as this crinum is concerned, that it simply moved in.
Where it’s lived a long time, people found uses for it — the Tao people of Taiwan’s Orchid Island cut slices of the stem, which they call vakong, tie them to a weight, and use them to bait fish into nets. The Paiwan and Puyuma use the plant as a living boundary marker. I mention it because it’s the kind of detail that tells you a plant has been part of somebody’s life for a very long time, not because I’m recommending you try either one.
A Note on the Name
If you go looking for this plant you’ll find a mess, and you should know that going in.
Crinum asiaticum is not really one tidy thing — it’s a complex. A number of plants sold under other names sit inside it or next to it, including the red-leaved ones people sell as ‘Queen Emma’. You’ll find sources treating the Queen Emma lily as a giant subspecies of C. asiaticum itself, and other sources putting it under three or four different names entirely. Nobody has settled it.
This is the honest condition of crinum nomenclature and I’ve stopped apologizing for it. What I’m selling you is the green-leaved grand crinum — the big architectural one with the white spidery flowers. If you want the burgundy-leaved plant, that’s the Queen Emma page.
Uses in the Landscape
This is a structure plant. Treat it like one.
Four feet tall and as much across, with that thick upright neck and a fountain of glossy leaves, it does the job that a shrub or a small palm would do — it holds a corner, anchors an entrance, breaks up a wall. The flowers are a bonus and they’re a good one, but if this plant never bloomed it would still be worth its spot.
That’s why you see it in commercial landscapes all over the Gulf. Landscape architects don’t specify plants that need a nursemaid. They specify this because it’s enormous, it looks tropical, it handles coastal conditions, and nothing eats it.
Give it real room. People plant it three feet from a sidewalk and then fight it for twenty years.
Planting & Care
Zones: This is the tropical end of the genus. Gulf Coast and south — think 9 and warmer for reliable outdoor growing. Inland and north of that, it’s a container plant that comes in, or a greenhouse plant. Don’t let the general crinum reputation for toughness fool you into planting this in Dallas and expecting it back.
Sun: Full sun to part sun.
Soil: Adaptable. It’s a coastal plant and it’s used to poor ground.
Depth: The neck stays well out of the soil — on this one the neck is a foot of plant in its own right and it belongs above ground.
Water: It’ll take moisture and it’ll take drought once established.
Handling: Wash your hands after you plant it, and keep the bulb away from anybody who might mistake it for produce.
The Other Kind of Tough
I spend most of this library telling you that crinums are functionally immortal — that I find them at homesites where the house has fallen in and nobody has watered anything since Eisenhower.
That story is a cold story. It’s about C. bulbispermum in the parentage, about a bulb the size of a softball riding out an ice storm in East Texas, about a plant that shrugs at a February that kills the neighbors.
This plant is not that. It has no cold in it at all. Take it to the wrong latitude and it will die like anything else, and it won’t take long.
What it has instead is the ability to walk into a tropical coastline and simply take up residence — to get loose in Florida and Louisiana and the Chagos Archipelago and just live there, permanently, without anyone’s help or permission. That is also a kind of indestructibility. It’s just indexed to a different climate.
Every plant is tough somewhere and killable somewhere else. This genus is good at making people forget the second half of that sentence. Plant this one where it belongs and it’ll outlive you too.
Shop this variety at SouthernBulbs.com