Location specific values:
Array
(
    [lat] => 47.391400
    [lng] => -122.315600
    [elevation] => 46.5
    [rainfall] => 970.6131
    [cold_temperature] => 1.0968
    [temperature] => 24.1284
    [user_eto] => 888.13206414
)

Plant specific values:
Array
(
    [rain_min_irrigation] => 809
    [eto_corrected] => 625
    [eto_adjusted_rain_min (rain_min_irrigation / eto_corrected)] => 1.328
)
St. Lawrence Bladderfern (Cystopteris laurentiana) | Easyscape Plant Profile

St. Lawrence Bladderfern

(Cystopteris laurentiana)

St. Lawrence Bladderfern (Cystopteris laurentiana)

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Estimated Native Range
Species Map Help

Climate Requirements for Des Moines, Washington

This Plant Your Site Plant Suitability for Your Location
• Precipitation 32" - 38" 38" Aquatic Aquatic
• High Temp. 68°F - 80°F 75°F Your summer temperatures are normal for this plant. Excellent
• Low Temp. -4°F - 11°F 34°F OK, but your winter temperatures are warmer than normal for this plant OK
This plant should grow very well at your location but requires an aquatic environment.

Summary

Cystopteris laurentiana, commonly known as St. Lawrence Bladderfern, is a deciduous fern native to rich, moist woods and rocky slopes in the Northeastern USA and Eastern Canada. It typically grows to a height of 0.5-2 feet (0.2-0.6 meters) and a width of 0.7-0.8 feet (0.2-0.2 meters). The fern is characterized by its delicate, finely divided fronds that emerge light green and mature to a darker shade. While it does not produce flowers, its fronds add a textured appearance to shaded garden areas. The term "blooms" is a misnomer for ferns as they reproduce via spores, not flowers.

St. Lawrence Bladderfern is valued for its ability to thrive in shady conditions, making it an excellent choice for woodland gardens, shaded borders, or as a ground cover under larger plants. It prefers consistently moist, well-drained soils rich in organic matter and can be used to prevent soil erosion on slopes. It requires minimal maintenance once established and is relatively free from serious pests and diseases. However, it can be sensitive to drought and excessive sunlight.CC BY-SA 4.0

Plant Description

  • Plant Type: Fern
  • Height: 0.5-1.5 feet
  • Width: 0.7-0.8 feet
  • Growth Rate: Moderate
  • Flower Color: N/A
  • Flowering Season: Non-Flowering
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Part Shade, Full Shade
  • Water: Medium
  • Drainage: Medium, Fast

Common Uses

Low Maintenance, Potted Plant, Rock Garden

Natural Habitat

Rich, moist woods and rocky slopes

Other Names

Common Names: Laurentian Bulblet Fern, Blasdell’s Laurentian Bladder Fern, Laurentian Bladder Fern, Laurentian Fragile Fern, St. Lawrence Bladder Fern, Cystoptère Laurentienne

Scientific Names: Cystopteris laurentiana, Cystopteris fragilis var. laurentiana

GBIF Accepted Name: Cystopteris laurentiana (Weath.) Blasdell