Photo by Melody

PlantFiles: Monadenium, Euphorbia
Euphorbia ritchiei

Family: Euphorbiaceae (yoo-for-bee-AY-see-ee) (Info)
Genus: Euphorbia (yoo-FOR-bee-uh) (Info)
Species: ritchiei (RICH-ee-eye) (Info)

Synonym:Monadenium ritchiei

8 members have or want this plant for trade.

Cactus and Succulents

6-12 in. (15-30 cm)
12-18 in. (30-45 cm)

12-15 in. (30-38 cm)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Sun to Partial Shade
Light Shade

All parts of plant are poisonous if ingested

Bloom Color:
Pale Pink

Bloom Time:
Mid Spring
Late Spring/Early Summer
Late Summer/Early Fall
Mid Fall


Other details:
Drought-tolerant; suitable for xeriscaping

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
From herbaceous stem cuttings
Allow cut surface to callous over before planting

Seed Collecting:
Unknown - Tell us

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By palmbob
Thumbnail #1 of Euphorbia ritchiei by palmbob

By cacti_lover
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By kniphofia
Thumbnail #3 of Euphorbia ritchiei by kniphofia

By cactus_lover
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By Xenomorf
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By franj
Thumbnail #6 of Euphorbia ritchiei by franj

By palmbob
Thumbnail #7 of Euphorbia ritchiei by palmbob

There are a total of 16 photos.
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1 positive
1 neutral
No negatives

Gardeners' Notes:

Positive green_dragon On Jan 24, 2008, green_dragon from Trumbull, CT wrote:

I love this Plant
It is easy to grow and does best in a regular clay pot. It will rot when over watered but when left to itself with a once week watering when actively growing it does fine and sometimes flowers. Use a 1/4 sharp sand 3/4 potting mix for soil to ensure the soil drains. Will shed leaves quickly with changes in light and when conditions become dry (Don't panic- its normal). Treat it like a true cactus. Snap off small bulby branches that grow from sides to root new plants. I started mine from a one inch cutting and now I have 3 big plants in 8 inch pots.

Neutral palmbob On Apr 27, 2004, palmbob from Acton, CA (Zone 8b) wrote:

Kenyan succulent with short, very knobby pale green columns. Very prone to rot (personal experience) so water only once soil dry. Also cold sensitive but not sure what hardiness actually is (won't survive 9b).


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

Chandler, Arizona
Tucson, Arizona
Lakewood, California
Sarasota, Florida
Seminole, Florida
Metairie, Louisiana

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