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Moon Cactus, Queen of the Night, Fish-bone Cactus, Rick-Rack Cactus 'Gertrudianum'

Epiphyllum anguliger

Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Epiphyllum (ep-ih-FYE-lum) (Info)
Species: anguliger (an-GYOO-lih-ger) (Info)
Cultivar: Gertrudianum
Synonym:Phyllocactus anguliger
Synonym:Epiphyllum darrahii
Synonym:Phyllocactus darrahii
» View all varieties of Orchid Cactus


Cactus and Succulents

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are fragrant

Water Requirements:

Unknown - Tell us

Where to Grow:

Suitable for growing in containers

This plant is suitable for growing indoors


36-48 in. (90-120 cm)


24-36 in. (60-90 cm)


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

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun



Bloom Color:

White/Near White

Bloom Time:

Mid Spring

Late Spring/Early Summer




Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:


Propagation Methods:

From leaf cuttings

Seed Collecting:

Allow unblemished fruit to ripen; clean and dry seeds

Ferment seeds before storing

Properly cleaned, seed can be successfully stored


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

Jones, Alabama

Phoenix, Arizona

Clayton, California

Key Largo, Florida

Ocala, Florida

Townsend, Georgia

Chicago, Illinois

Des Moines, Iowa

Deridder, Louisiana

Kenner, Louisiana

Lafayette, Louisiana

Columbus, Mississippi

Whiting, New Jersey

Catskill, New York

Medford, Oregon

Doylestown, Pennsylvania

Pflugerville, Texas

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Gardeners' Notes:


On Jul 14, 2017, CrazyCoconut from Coffs Harbour,
Australia wrote:

I am looking for this plant (white, creamy coloured flower). If anyone has one (in Australia, preferably NSW) can I purchase a cutting or plant? I would be extremely grateful.


On Feb 16, 2017, smileclick from Sydney,
Australia wrote:

I bought a few rooted cutting on ebay and put them in a smallish pot about 3 years ago. Long arching fronds about 1m/3' long shot out and it flowered for the first time a week ago. Tonight it's flowering again, but with more blooms. It's in a balcony and only gets a few hours of direct sun in the morning. I water it every couple of days and use fish/seaweed based fertiliser every month or so over the warmer months. It seems to like being roitbound.

Each flower last one night, and give off a strong lemony fragrance (if it's a warm night), very similar to Magnolia grandiflora and yellow/white frangipannis. Highly recommended for both its fragrant flowers and it's sculptured form. Ideal for hanging baskets above head height, so the flowers are at nose level 😁


On Dec 4, 2015, 12nesray from Doylestown, PA wrote:

Hi, I got this plant a few months ago and I have no idea what it is. It looks extremely similar to the cactus I found here. I was wondering if you could confirm this for me, and if it is the same how do I get it to branch out or make more than one tall "stem" for lack of a better word. Thank You and I look forward to finding out more about my lovely plant and learning how to take care of it so it is healthy and well maintained. Thank you!! You can view my plant in the gallery thank you so much for the help!!


On Sep 23, 2008, RxBenson from Pikesville, MD (Zone 7a) wrote:

"Christine," as I call my E. anguliger (as in the pop star -- yuk yuk), took a couple of years to decide to grow and bloom from a small plant from a New England mail-order nursery. I was led to believe that she was a fall bloomer and indeed she was the first year. Now she blooms twice a year, in waves of about two weeks each. Spring and fall -- mid day length. We're in southern NJ.

She spends the winter in full southeastern sun in my sunroom and the summer May-Sept hanging in dappled shade on a bough of a yellow pine -- where it flowers like crazy with the right day length. Fertilization is haphazard and usually fish emulsion. This summer I "abandoned" many of my green children, neglecting to water them throughout a drought here in NJ, but fortunately the dew was a life-save... read more


On Jul 9, 2008, CoolJazz from Melbourne,
Australia wrote:

I have had this plant growing in the same pot for some 20 years. It has reached approximately 9 feet in height. It produces some 16-20 fragrant, flowers on a single night in mid Summer, with repeat flowering of up to 6 flowers sporadically until first frost. The number of blooms per flowering episode appears to decline with each flowering episode and as temperatures begin to drop. For me, it flowers annually- and there are approximately 6 events per annum.

Position: prefers full sun, north facing aspect and likes to be somewhat pot-bound. (will not flower if left in shade, even light shade)

Growing: In pots, outside. Top dress with Dynamic Lifter every 1-2 years; light prune occassionally for shape as can become straggly. Trim excessively long canes to mainta... read more


On May 28, 2006, Queen41 from Catskill, NY wrote:

This bloomed last nite a round 11 p.m. for the first time since I have had it. It took a long time for me to get one flower.
Will I be getting more flowers and how long do I have to wait for another once?
Will this bloom die off now or will it open again tonite?
It has started to climb toward the ceiling in the dining room.
I have it in a clay pot facing East Side of house where I get the most sun.
I started it from a clipping which I just stuck in a pot of dirt.
It has a beautiful smell........indescribable......heavenly!
I think I have had this plant for about five years.


On May 14, 2006, Two_and_a_cat from Titusville, FL wrote:

What a treat! It looks like a cactus, climbs up into trees, then in late spring/early summer (May) it bloomed- big, beautiful, perfumey blooms! It starts incredibly easy from cuttings- you can just stick 'emin the ground, or start them in water. Everyone who has seen the flowers has asked for some. Here in Titusville it grows great in our SE front yard under and in a large tree (we think it's some kind of ornamental cherry tree).