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bright indirect light (3-6 feet from a south or west window, or right next to an east window. Under a grow light, 6-10 inches away works well) is ideal. Will adapt to lower light levels thanks to its dark, chlorophyll-rich leaves, but growth slows noticeably. Avoid direct sun (right in the window where sun actually hits the leaves. A strong grow light 4-6 inches away can substitute), which scorches the leaflets.Light
Keep soil consistently moist but never waterlogged. Water when the top inch feels dry. Sensitive to chlorine and fluoride in tap water; use filtered, rainwater, or distilled water when possible. More drought tolerant (can go 2-3 weeks without water once established. When in doubt, wait another few days) than most ferns.Water
moderate humidity (40-60%. Most homes are fine, but a pebble tray helps in winter when heating dries the air out) around 50% is ideal. Does not need the high humidity (60-80%. Group your plants together, set them on a pebble tray with water, or run a humidifier nearby) that most ferns demand, which is a major reason it works well as a houseplant. A pebble tray or room humidifier helps in dry winter months.Humidity
Average room temperature (65-75F / 18-24C, which is normal household temperature) of 60°F to 75°F (15 to 24°C). Avoid heat above 75°F, which causes brown leaf tips. Keep away from cold drafts and heating vents.Temperature
easyDifficulty
Pellaea rotundifolia plant

Button Fern

Pellaea rotundifolia

Easy

The Button Fern is a compact, ground-hugging fern with rows of small, round, dark-green leathery leaflets arranged along arching fronds — you'll see immediately why someone called them buttons. Unlike most ferns, your plant tolerates drier conditions and lower humidity, making it one of the more forgiving ferns for indoor growing. The frond stems darken to a burgundy-black as the plant matures, which creates a nice contrast with the deep green foliage.

Care Guide

How to grow Button Fern

Light

bright indirect light (3-6 feet

Water

Keep soil consistently moist but

Humidity

40-60%

Temperature

Average room temperature (65-75F /

Soil

Good quality potting mix with

Propagation

Division at repotting time is

Common Problems

Yellowing and rotting rhizomes signal

Did You Know

Fun Facts

The Button Fern holds the Royal Horticultural Society's Award of Garden Merit — a distinction that confirms it performs reliably in real-world growing conditions, not just in ideal test settings.

Pet Safety

Pet safe

Non-toxic to cats, dogs, and humans according to the ASPCA.

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