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Mertensia Species, Gray Oysterleaf, Oyster Plant

Mertensiamaritima

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Genus

Mertensia (mer-TEN-see-uh)

Info

Species

maritima (muh-RIT-tim-muh)

Info

Synonym

Sun Exposure

Full Sun

Foliage

Grown for foliage

Herbaceous

Smooth

Height

under 6 in. (15 cm)

Spacing

24-36 in. (60-90 cm)

Hardiness

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)

Danger

Unknown - Tell us

Bloom Color

Pink

Light Blue

Dark Blue

Bloom Time

Mid Summer

Other Details

Gardener's Notes:

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negative

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janelp_lee

Toronto, ON (Zone 6a) | October 2018 | positive

Seeds take about one month to germinate. Keep seedlings away from bugs, snails and slugs! It is easy to propagate from offsets or small...Read More side shoots.

Best in full sun.

Ted_B

Birmingham, AL (Zone 8a) | July 2017 | positive

Best observed germination rates when seeds are soaked overnight, then kept in refrigerated, barely moist sand. Seedlings are highly susce...Read More

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