Adder's-tongue Fern

Ophioglossumvulgatum

Genus
Ophioglossum (oh-fee-oh-GLOSS-um)
Species
vulgatum (vul-GAIT-um)
Synonym
Sun Exposure
Partial to Full Shade
Foliage
Herbaceous
Textured
Height
under 6 in. (15 cm)
Spacing
3-6 in. (7-15 cm)
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)
Bloom Color
Chartreuse (yellow-green)
Inconspicuous/none
Bloom Time
Late Winter/Early Spring
Other Details
Category
Ferns
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
Patent Information
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From spores
Seed Collecting
Regional

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

Suwanee, Georgia

Piedmont, Missouri

Conway, South Carolina

Lebanon, Tennessee

Featured Videos

Gardener's Notes:

2
positives
0
neutral
0
negative
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G
Suwanee, GA (Zone 7a) | April 2006 | positive

Last year I rescued three of these nice little plants from a lot that was about to be bulldozed. They came up this year and increased th...Read More

T
Piedmont, MO (Zone 6a) | April 2004 | positive

A native fern that I was happy to find growing on my property near a wet weather stream. The plant is small, the blades are only about 2 ...Read More

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