Hymenocallis speciosa

Windward Islands origin and introduced Caribbean populations

Hymenocallis speciosa is native to the Windward Islands in the eastern Caribbean and grows in seasonally dry tropical habitats.

The species has also become introduced or naturalised on other Caribbean islands, including the Bahamas and Cuba.

Building bulb strength in Hymenocallis speciosa

During active growth, water thoroughly so the mix remains evenly moist and freely drained. Reduce watering only when growth slows or the leaves begin to yellow naturally.

Provide very bright filtered light or several hours of acclimatised sun. Warmth and moderate feeding help the bulb build strong leaves and flowers.

Use a fertile, aerated bulb mix in a stable pot, with the top of the bulb at or near the surface.

Remove faded flower stems, retain healthy leaves until they decline naturally and divide only well-rooted offsets that separate cleanly.

Bulb rot, leaf yellowing and flowering problems

• Soft foul-smelling bulb base above wet substrate: Remove damaged tissue with clean tools and restart the firm bulb in warm, freely draining conditions.
• Healthy plant without flowers: The bulb may still be small, recently divided, underlit or receiving too much nitrogen. Improve light and keep healthy leaves so the bulb can rebuild its energy.
• Gradual yellowing after flowering with a firm bulb and roots: This is normal as the leaves return energy to the bulb.
• Yellowing during active growth above wet mix: Inspect the bulb and roots before watering again.
• Expanding red or brown spots: Move the plant away from others, remove affected leaves and improve airflow.
• Cottony insects at the leaf bases, bulb or roots: Treat mealybugs throughout the affected areas.

Hymenocallis speciosa is toxic to people and pets

• This plant is toxic. Keep every part away from children, cats and dogs.
• Toxic alkaloids are concentrated in the bulb, although other parts can also cause poisoning.
• Swallowing any part may cause drooling, vomiting, stomach pain, weakness or tremors. Contact a veterinarian or medical professional promptly, especially if the bulb was eaten.

What does Hymenocallis speciosa mean, and who first published it?

Hymenocallis combines Greek hymēn, “membrane”, with kallos, “beauty”. Speciosa means “showy”, “splendid” or “beautiful”.

Richard Anthony Salisbury established the genus Hymenocallis in 1812 in Transactions of the Horticultural Society of London, volume 1, page 338.

Richard Anthony Salisbury first described it as Pancratium speciosum in 1794 in Transactions of the Linnean Society of London, volume 2, page 73; Carl Linnaeus the Younger had proposed that name. Richard Anthony Salisbury later placed it in Hymenocallis as Hymenocallis speciosa in 1812 in Transactions of the Horticultural Society of London, volume 1, page 340.