Photo by Melody

PlantFiles: Dunce's Cap, Chinese Dunce Cap
Orostachys iwarenge

Family: Crassulaceae (krass-yoo-LAY-see-ee) (Info)
Genus: Orostachys (or-oh-STAK-iss) (Info)
Species: iwarenge

Synonym:Cotyledon iwarenge
Synonym:Orostachys iwarenge var. boehmeri
Synonym:Orostachys boehmeri

3 vendors have this plant for sale.

14 members have or want this plant for trade.

Alpines and Rock Gardens
Cactus and Succulents

under 6 in. (15 cm)

9-12 in. (22-30 cm)
12-15 in. (30-38 cm)

USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
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)

Sun Exposure:
Full Sun


Bloom Color:
White/Near White

Bloom Time:
Late Summer/Early Fall
Mid Fall

Grown for foliage

Other details:
Average Water Needs; Water regularly; do not overwater
Suitable for growing in containers

Soil pH requirements:
7.9 to 8.5 (alkaline)

Patent Information:

Propagation Methods:
From herbaceous stem cuttings

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

Thumbnail #1 of Orostachys iwarenge by BUFFY690

By mkjones
Thumbnail #2 of Orostachys iwarenge by mkjones

By Calif_Sue
Thumbnail #3 of Orostachys iwarenge by Calif_Sue

By Calif_Sue
Thumbnail #4 of Orostachys iwarenge by Calif_Sue

By Kell
Thumbnail #5 of Orostachys iwarenge by Kell

By Kell
Thumbnail #6 of Orostachys iwarenge by Kell

By Kell
Thumbnail #7 of Orostachys iwarenge by Kell

There are a total of 26 photos.
Click here to view them all!


4 positives
No neutrals
No negatives

Gardeners' Notes:

Positive jackidee On Nov 8, 2011, jackidee from Sherwood, OR wrote:

I bought this labeled Orostachys boehmeri. It has performed well in my wet winters in soil amended for great drainage. Expecting winter death, I started some in pots and enjoy them as container plants too. Blooms in October. Offsets make interesting little patches in winter.

Positive promethean_spar On Jan 9, 2010, promethean_spar from Union City, CA wrote:

Grows well in CA, heat and cold are not a problem - however slugs and snails seem to like the Orostachys that lack pointy leaves.

In winter when exposed to frost the outer leaves will die and the core of the rosette will curl into a tight ball and stay that way until opening up in spring. They look pretty ratty compared to semperviviums in winter, but don't get burned to the ground like sedums. This species grows best in cool weather and appears dormant mid-summer, it grows all winter long when protected from frost in a greenhouse, even with lows in the 20's. Frost appears to trigger them to curl up and go dormant.

Orostachys iwarenge produces large numbers of offsets on stolons that are about 3" long, so despite the plant's small size it should be placed in a bowl or trough that is at least 6" in diameter so the offsets can root. I tried them in 3.5" pots and the offsets all hung over the sides and failed to root. Excessive heat or cold will cause the stolons to wither, leaving the offsets to fend for themselves.

Orostachys are monocarpic (a rosette dies in flowering), so it is important to keep plants and offsets of different ages to avoid losing them to flowering.

Positive mkjones On May 15, 2005, mkjones from Aurora, TX (Zone 8a) wrote:

Amazing little plant; the foliage so strongly resembles stone roses!

Positive BUFFY690 On May 5, 2005, BUFFY690 from Prosperity, SC (Zone 7b) wrote:

this plant is also know as

Botanical Name: Orostachys boehmeri
Hardy to Zone: 6
Flower Color: White
Bloom Time: October
Foliage Color: Grey
Winter Interest: No
Drought Tolerance: Very High


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

Brentwood, California
Richmond, California
San Francisco, California
San Jose, California
San Leandro, California
Sunol, California
Woodcrest, California
Ellendale, Delaware
Cannelton, Indiana
Sherwood, Oregon
Austin, Texas
Fort Worth, Texas
Garland, Texas
Roanoke, Texas
Shepherdstown, West Virginia

We recommend Firefox
Overwhelmed? There's a lot to see here. Try starting at our homepage.

[ Home | About | Advertise | Media Kit | Mission | Featured Companies | Submit an Article | Terms of Use | Tour | Rules | Privacy Policy | Contact Us ]

Back to the top

Copyright © 2000-2015 Dave's Garden, an Internet Brands company. All Rights Reserved.

Hope for America