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American Elm, White Elm 'St. Croix'

Ulmusamericana

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Family

Ulmaceae (ulm-AY-see-ee)

Info

Genus

Ulmus (ULM-us)

Info

Species

americana (a-mer-ih-KAY-na)

Info

Synonym

Sun Exposure

Full Sun

Foliage

Deciduous

Height

over 40 ft. (12 m)

Spacing

12-15 ft. (3.6-4.7 m)

Hardiness

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)

USDA Zone 9a: to -6.6 °C (20 °F)

USDA Zone 9b: to -3.8 °C (25 °F)

Danger

N/A

Bloom Color

Inconspicuous/none

Bloom Time

Late Winter/Early Spring

Other Details

Gardener's Notes:

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coriaceous

ROSLINDALE, MA | March 2015 | neutral

The patent application claims that this cultivar is highly tolerant of Dutch Elm Disease.

The application also claims prob...Read Moreable hardiness from Z2-5(6).

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American Elm, White Elm 'St. Croix'

Ulmusamericana

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