Photo by Melody

PlantFiles: Tunic Flower
Petrorhagia saxifraga

Family: Caryophyllaceae (kar-ree-oh-fil-AY-see-ee) (Info)
Genus: Petrorhagia (pet-roh-RAG-ee-uh) (Info)
Species: saxifraga (saks-if-FRAG-uh) (Info)

Synonym:Tunica saxifraga
Synonym:Dianthus saxifragus

3 vendors have this plant for sale.

6 members have or want this plant for trade.

Alpines and Rock Gardens

6-12 in. (15-30 cm)

9-12 in. (22-30 cm)

USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
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)

Sun Exposure:
Full Sun


Bloom Color:
Pale Pink
White/Near White

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

Grown for foliage

Other details:
Drought-tolerant; suitable for xeriscaping

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:
From herbaceous stem cuttings

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By poppysue
Thumbnail #1 of Petrorhagia saxifraga by poppysue

By poppysue
Thumbnail #2 of Petrorhagia saxifraga by poppysue

By taramark
Thumbnail #3 of Petrorhagia saxifraga by taramark

By poppysue
Thumbnail #4 of Petrorhagia saxifraga by poppysue

By Weezingreens
Thumbnail #5 of Petrorhagia saxifraga by Weezingreens


3 positives
2 neutrals
No negatives

Gardeners' Notes:

Positive jrtinker On Jun 30, 2011, jrtinker from Palmer, AK (Zone 3b) wrote:

This plant is happier growing in the D4 gravel of my driveway than in my rock garden or perennial beds.

Neutral altagardener On Mar 29, 2008, altagardener from Calgary, AB (Zone 3b) wrote:

As Petrorhagia saxifraga is totally hardy in zone 3 (in this area which is subject to chinooks and no reliable snow cover), and, indeed, is one of the earliest plants to show new growth in late winter, those who have been treating it as an annual may wish to try it as a perennial.

Positive Weezingreens On Feb 23, 2007, Weezingreens from Seward, AK (Zone 3b) wrote:

I've grown this plant as an annual, using it in baskets and borders. Seeds are easily harvested by cutting the spent stems, putting them head first in a paper bag, then wait for them to dry out and fall into the bag.

Neutral Togetherwegrow On Nov 28, 2002, Togetherwegrow from Milton
Canada wrote:

I haven't grown it before but a friend grows it & just loves it! As for propagation, it self-seeds prolifically. It is very easy and reliable to grow. Looks similar to Baby's Breath but is much easier to grow.

I plan on getting it for 2003.

Positive joyceh On Oct 28, 2002, joyceh from Stewart, MN (Zone 4a) wrote:

I've been growing one plant for the past 4 years. It is covered with pink blossoms from mid June to Mid August. I have not yet figured out a way to propagate it. Also, I live in zone 4. An update to this: I have had the first plant since summer of 98. It's now 2005. A couple of years ago I found another source and bought 6 more plants.. I found info that says propagation is by stem tip cuttings taken shortly after growth starts in spring. I have not tried this yet but plan to this spring. I have never seen any seedlings from this plant. My soil ph is 6.5 to 7.0. One catalog listed it as borderline hardy for zone 4, but it has survived some nasty winters with little to no snow cover and no mulch. This past winter has been the worst I've seen in 20+ years of gardening. If it makes it this year it should handle just about anything.


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

Palmer, Alaska
Seward, Alaska
Parker, Colorado
Lexington, Massachusetts

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