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Howard's Rain Lily, Rainlily
Habranthus howardii

Family: Amaryllidaceae (am-uh-ril-id-AY-see-ee) (Info)
Genus: Habranthus (ha-BRAN-thus) (Info)
Species: howardii (how-ARD-ee-eye) (Info)




6-12 in. (15-30 cm)


Unknown - Tell us


USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun

Sun to Partial Shade


All parts of plant are poisonous if ingested

Bloom Color:

Pale Yellow

Bloom Time:

Late Spring/Early Summer




Other details:

This plant is attractive to bees, butterflies and/or birds

Flowers are fragrant

Flowers are good for cutting

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:


Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

From seed; germinate in a damp paper towel

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds


This plant has been said to grow in the following regions:

Merced, California

Gardeners' Notes:


On Oct 25, 2004, tcfromky from Mercer, PA (Zone 5a) wrote:

This species was first collected by Thad Howard in Mexico in 1962 and 1963. It must be absolutely dry during its dormant period, and the bulb should only be repotted when absolutely necessary, as repotting causes it to fail to bloom the following season.


On Mar 31, 2004, ladyannne from Merced, CA (Zone 9a) wrote:

I took a great deal of effort to finally identify this plant in the yard, but my understanding is that it is called Amaryllis memoria-corsii Howardii, a hybrid of Crinum moorei and Amaryllis belladonna. Western Sunset says get an offset from a friend as it is scarce.

The leaves are like Naked Ladies but are quite wide (up to 6") and almost papery. The greenery will get slimy in winter and quite ugly. In spring the leaves are simply stunning, especially in mass after twenty years of multiplying in the same spot. There must be twenty plants in a 24" by 24" space, terribly crowded together. We have ours in shade beneath an extensive Mulberry tree but we lost that limb last spring and the lily did well after initial shock of being exposed to the morning and hot midday sun. ... read more