Ferns diurnal

netted chain fern

Woodwardia areolata

Transform your wet garden corners into an ancient oasis with the netted chain fern. With its distinctive vein patterns and striking 'chain-link' spores, it’s a master of texture and a sanctuary for backyard amphibians.

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Quick Identification

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Size

Sterile fronds reach 30-60 cm (12-24 inches) in height; fertile fronds are typically taller and narrower.

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Colors

Sterile fronds are a bright, waxy green; fertile fronds turn dark cinnamon-brown to blackish; stalks are often reddish-brown.

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Key Features

Netted or 'chain-like' vein pattern visible on the leaf underside
Deeply lobed sterile fronds with alternate (not opposite) leaflets
Striking dimorphism with whip-like brown fertile fronds
Glossy, dark-colored stems that persist into winter

When You’ll See Them

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Activity pattern diurnal

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Peak hours Sunrise to Sunset (best for growth and photography)

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Season May-September (Sterile fronds); August-October (Fertile fronds)

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Diet As a non-flowering plant, it gains energy via photosynthesis and absorbs water and minerals from highly acidic, moist soils.

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Habitat Wet woodland floors, swamps, bogs, and shaded suburban garden edges with acidic soil.

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Behavior

The netted chain fern is a colony-forming perennial that thrives in the 'in-between' spaces of the backyard—those soggy, shaded spots where the lawn meets the woods. It spreads slowly but surely using a network of creeping underground rhizomes, creating a lush, prehistoric-looking carpet. Unlike many other plants, it produces two entirely different types of leaves: the leafy green sterile fronds for food production and the thin, beaded fertile fronds for reproduction.

In the garden ecosystem, this fern acts as a vital structural component. Its dense, low-growing habit creates a cool, humid microclimate at the soil level, which is essential for the survival of small woodland creatures. While the plant itself isn't 'social,' it is highly communal, often found growing alongside sphagnum moss or highbush blueberry bushes in acidic, wet environments.

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Camera Tips

Capturing the netted chain fern requires a different strategy than mobile wildlife. To showcase its most unique feature—the 'chain' vein pattern—position your camera at a low angle (about 6 inches off the ground) and aim it upward toward the underside of the sterile fronds. Using a camera with a macro or close-up setting will allow you to capture the intricate, net-like architecture of the veins that gives the species its name. This is best done on a bright but overcast day to avoid harsh shadows and glare on the waxy leaf surface.

If you are using a motion-activated trail camera, be aware that ferns are notorious for creating 'false triggers' on windy days. To avoid a memory card full of waving leaves, place your camera on a sturdy stake or tree trunk and clear any tall grass immediately in front of the lens. However, you can use this movement to your advantage: set your camera to time-lapse mode during the spring (April and May) to capture the dramatic 'unfurling' of the fiddleheads. Set the interval to one photo every 2-4 hours to see the fern grow from a fuzzy nub to a full frond over the course of a week.

Don't just focus on the green leaves; the dark, narrow fertile fronds that emerge in late summer are excellent subjects. These stalks are much stiffer and less prone to wind-blur. They also attract specific visitors. By focusing your camera on a cluster of these fertile stalks, you can often catch images of small spiders weaving webs between them or tree frogs using the sturdy stems as a hunting perch. For the best color depth, set your white balance to 'Cloudy' to bring out the rich cinnamon and bronze tones of the fertile fronds.

Finally, consider the seasonal transition. While the green fronds may wither after the first frost, the dark fertile stalks often remain standing through the winter. These provide excellent contrast against the snow. If you have an AI-powered camera that identifies birds, try placing a feeder nearby; the stiff stalks of the netted chain fern are popular landing spots for chickadees and wrens, providing you with a beautiful, naturalistic foreground for your bird photography.

Similar Species

Species that look similar or are commonly confused with netted chain fern.

Sensitive Fern

The sensitive fern has leaflets that sit directly opposite each other on the stem, while the netted chain fern's leaflets are alternate.

Virginia Chain Fern

The Virginia chain fern is much larger and its fertile and sterile fronds look similar, unlike the highly distinct dimorphic fronds of the netted chain fern.

Frequently Asked Questions

As a plant, the netted chain fern is 'active' during daylight hours when it performs photosynthesis. However, for the best photos, early morning or late afternoon light provides the best contrast to see its netted vein structure.

The best way to 'attract' or grow this fern is to provide it with acidic, wet, or boggy soil and plenty of shade. It loves areas near downspouts or pond edges where the soil stays consistently moist.

Netted chain ferns do not eat; they are autotrophs that create their own food using sunlight, water, and carbon dioxide. They thrive best in nutrient-poor, acidic soils where other plants might struggle.

Yes, they are common in suburban areas within the Eastern United States, particularly in low-lying yards, near drainage ditches, or in wooded neighborhoods that have retained their natural wetlands.

While they look similar, the netted chain fern has leaflets that are arranged alternately along the stem, whereas the sensitive fern has leaflets that are directly opposite each other. Additionally, the 'netted' veins are much more prominent in the chain fern.

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