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Encrusted Saxifrage, Silver Saxifrage
Saxifraga hostii

Family: Saxifragaceae (saks-ih-frag-AY-see-ee) (Info)
Genus: Saxifraga (saks-if-FRAG-uh) (Info)
Species: hostii

Category:

Alpines and Rock Gardens

Perennials

Height:

under 6 in. (15 cm)

6-12 in. (15-30 cm)

12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

Spacing:

15-18 in. (38-45 cm)

Hardiness:

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

Sun to Partial Shade

Danger:

Unknown - Tell us

Bloom Color:

White/Near White

Bloom Time:

Late Spring/Early Summer

Foliage:

Grown for foliage

Evergreen

Silver/Gray

Smooth-Textured

Leathery-Textured

Other details:

Average Water Needs; Water regularly; do not overwater

Suitable for growing in containers

Soil pH requirements:

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:

Unknown - Tell us

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 has been said to grow in the following regions:

Lakeville, Minnesota

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Dec 1, 2004, Todd_Boland from St. John's, NL (Zone 5b) wrote:

Saxifraga hostii appears much like a larger version of S. paniculata, but it is not quite a silvery in colour. The rosettes are grey-green with white, encrusted edges. The flower stems rtise12-24" with a loose spray of white, red-spotted flowers. They are native to limestone regions of the southern and eastern Alps.