Field Fern Plant Care
Dryopteris arguta (Kaulf.) Maxon
Updated · Sources · How we source care data
Dryopteris arguta, with the common name coastal woodfern, is a species of wood fern. It is native to the west coast and western interior mountain ranges of North America, from British Columbia, throughout California, and into Arizona.
Every 7–14 days
Filtered sunlight or partial shade
60–75°F
50–70%
At a glance
How do you care for Field Fern?
Water Field Fern every 7–14 days, letting the top layer of soil dry out between waterings, and give it filtered sunlight or partial shade. It prefers temperatures of 60–75°F (16–24°C) and 50–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Field Fern Native To?
What Is the Field Fern?
Field Fern (Dryopteris arguta) belongs to the Dryopteridaceae family within the Dryopteris genus. Field Fern is native to the west coast and western interior mountain ranges of North America, from British Columbia, throughout California, and into Arizona. Field Fern is also known as Coastal Wood Fern, California Shield Fern.
Field Fern displays a fern with spreading habit growth habit, reaching up to 2 ft tall with a spread of approximately 3 ft. Field Fern produces non-flowering plant.
Leaf size: approximately 18 inches.
How Often Should You Water a Field Fern?
Dryopteris arguta requires watering every 7–14 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–14 days
Let soil partially dry between waterings
What Light Does the Field Fern Need?
Field Fern thrives in filtered sunlight or partial shade. Avoid placing Field Fern in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Filtered sunlight or partial shade
What Temperature and Humidity Does the Field Fern Prefer?
Dryopteris arguta grows best at temperatures of 60–75°F. Field Fern prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
60–75°F
Humidity
50–70%
What Soil Mix Works Best for a Field Fern?
Rich, well-draining soil with high organic matter content. Good drainage is essential for Field Fern to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Field Fern?
Feed Field Fern every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Field Fern?
Repot every 2-3 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Field Fern?
Field Fern can be propagated through spores, division of rhizomes. Similar propagation techniques also apply to broad buckler fern plant care, which shares the same genus.
Is the Field Fern Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Field Fern, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Field Fern?
Field Fern is susceptible to aphids, scale insects, mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Field Fern Need?
Field Fern grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Field Fern is native to the west coast and western interior mountain ranges of North America, from British Columbia, throughout California, and into Arizona. In cooler regions, grow Field Fern as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Field Fern is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Dryopteris genus — compare its care with other Dryopteris species on PlantoScan.
Dryopteris is part of the Dryopteridaceae plant family — browse all Dryopteridaceae genera and species.
Field Fern produces blooms — browse other flowering plants.
More Dryopteris Species
Other Dryopteris species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Dryopteris arguta (Kaulf.) Maxon, family Dryopteridaceae (first published in Amer. Fern J. 11: 3. 1921. (1921)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Field Fern, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 13a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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