Petrorhagia, Tunic Flower
Petrorhagiasaxifraga 'Rosette'

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

Category
Alpines and Rock Gardens
Perennials

Water Requirements
Drought-tolerant; suitable for xeriscaping

Sun Exposure
Full Sun

Foliage
Grown for foliage
Herbaceous

Foliage Color

Height
6-12 in. (15-30 cm)

Spacing
9-12 in. (22-30 cm)

Hardiness
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)

Where to Grow

Danger
N/A

Bloom Color
Pale Pink
White/Near White

Bloom Characteristics

Bloom Size

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

Other details

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
Non-patented

Propagation Methods
From herbaceous stem cuttings

Seed Collecting