Photo by Melody

PlantFiles: Mountain Sandwort
Arenaria montana

Family: Caryophyllaceae (kar-ree-oh-fil-AY-see-ee) (Info)
Genus: Arenaria (ar-en-AR-ee-uh) (Info)
Species: montana (MON-tah-nuh) (Info)

6 members have or want this plant for trade.

Alpines and Rock Gardens

under 6 in. (15 cm)

3-6 in. (7-15 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)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:
White/Near White

Bloom Time:
Mid Spring
Mid Summer

Grown for foliage

Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
From seed; sow indoors before last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

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2 positives
1 neutral
No negatives

Gardeners' Notes:

Positive meindert On Mar 25, 2003, meindert wrote:

seed collection can be done easily with a battery operated, small vacuum cleaner,as soon as seedpods are yellow.

Positive lyndad On May 19, 2002, lyndad wrote:

We found these in a garden store here in Salem Oregon last summer. We wanted a flowering perennial groundcover that would cascade over a retaining wall. We planted in part to full shade. They are doing great there and spreading rapidly. They don't need a lot of water - weekly watering during dry weather has been enough. They have small but abundant white star-like flowers that bloom continuously, dying back a bit in the winter. People are always asking us what they are.

Neutral Sis On Aug 31, 2001, Sis wrote:

Groundcover that likes well-drained
average sandy or loamy soil. Plants
dislike acid soil.

Spreads slowly to form low,moss-like
mats of foliage. Shallow- rooted;keep
moist during dry spells.

Divide in spring or fall. Sow seed out-
doors in fall or inside in early spring.

No serioius pests or diseases.


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

San Francisco, California
Stone Mountain, Georgia
Plainfield, Illinois
Monrovia, Maryland
North Billerica, Massachusetts
Ann Arbor, Michigan
Charlotte, North Carolina
The Dalles, Oregon
Pawtucket, Rhode Island
Knoxville, Tennessee
Maryville, Tennessee
Wytheville, Virginia
Port Orchard, Washington

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