Saxifraga Species, Prickly Saxifrage, Three-Toothed Saxifrage

Saxifragatricuspidata

Family
Saxifragaceae (saks-ih-frag-AY-see-ee)
Genus
Saxifraga (saks-if-FRAG-uh)
Species
tricuspidata (try-kusp-ee-DAY-tuh)
Synonym
Saxifraga chamissoi
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Grown for foliage
Evergreen
Smooth
Height
under 6 in. (15 cm)
6-12 in. (15-30 cm)
Spacing
12-15 in. (30-38 cm)
Hardiness
USDA Zone 1: below -45.6 °C (-55 °F)
USDA Zone 2a: to -45.5 °C (-50 °F)
USDA Zone 2b: to -42.7 °C (-45 °F)
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
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)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
Bloom Color
White/Near White
Bloom Time
Late Spring/Early Summer
Other Details
Category
Alpines and Rock Gardens
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Dark/Black
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
From herbaceous stem cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Anchorage, Alaska(2 reports)

Central, Alaska

Featured Videos

Gardener's Notes:

1
positive
1
neutral
0
negative
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G
Anchorage, AK (Zone 4a) | September 2006 | positive

This plant is not confined to the Arctic! It is common in Southcentral Alaska on dry, rocky, open sub-alpine and alpine slopes. It grows...Read More

T
St. John's, NL (Zone 5b) | December 2004 | neutral

This species is native primarily to the high Arctic, where they are actually quite common growing among cracks in the rocks. The rosette...Read More

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