Learn how to care for a Button Fern. Discover the best light, watering, soil, humidity, fertilizing, and growing tips for healthy indoor plants.

Button Fern Care Guide

The Button Fern (Pellaea rotundifolia) is a charming, low-maintenance fern known for its small, round, deep green leaflets that grow along slender arching stems. Native to New Zealand, this compact houseplant adds a soft, elegant touch to shelves, desks, terrariums, hanging planters, and shaded indoor spaces. Unlike many ferns, the Button Fern is more tolerant of average household conditions, making it an excellent choice for beginners.

Plant Information

• Botanical Name: Pellaea rotundifolia
• Common Name: Button Fern
• Plant Type: Evergreen Fern
• Mature Height: 10–18 inches
• Mature Width: 12–18 inches
• Growth Rate: Slow to Moderate
• USDA Hardiness Zones: 9–11 (Outdoors)

Light Requirements

Button Fern thrives in bright, indirect light but also adapts well to medium light conditions. Avoid direct sunlight, especially during the afternoon, as it can scorch the delicate foliage.

Watering

Water when the top 1 inch of soil feels dry. Keep the soil lightly moist but never soggy. Unlike many other ferns, Button Fern can tolerate slightly drier soil between waterings but should never be allowed to dry out completely for extended periods.

Soil

Use a well-draining, organic-rich potting mix that retains some moisture while allowing excess water to drain freely. A quality indoor potting mix with added perlite works well.

Temperature & Humidity

• Ideal temperature: 60–75°F (16–24°C)
• Avoid temperatures below 50°F (10°C).
• Prefers moderate humidity but adapts well to average household humidity levels. Additional humidity can encourage fuller, healthier growth.

Fertilizing

Feed every 4–6 weeks during spring and summer with a balanced liquid houseplant fertilizer diluted to half strength. Reduce feeding during fall and winter.

Maintenance

• Remove brown or damaged fronds to keep the plant looking tidy.
• Rotate the pot every few weeks for even growth.
• Repot every 2–3 years or when the plant becomes root-bound.

Common Problems

• Brown leaf tips may indicate low humidity, underwatering, or inconsistent watering.
• Yellow fronds are often caused by overwatering or poor drainage.
• Watch for occasional spider mites or mealybugs, especially in dry indoor environments.

Pet Safety

Button Fern is considered non-toxic to cats and dogs, making it a great choice for pet-friendly households.

Why You'll Love It

• Attractive round, button-like foliage
• Compact size perfect for desks, shelves, and terrariums
• Easy to care for and beginner-friendly
• More tolerant of average indoor humidity than many ferns
• Pet-friendly and ideal for homes and offices

With bright indirect light, moderate watering, and occasional feeding, your Button Fern will develop lush, arching fronds that bring a fresh, natural look to any indoor space year-round.