Bluntlobe cliff fern (Woodsia obtusa)

Bluntlobe cliff fern

Also known as: Blunt-lobed cliff fern

In the wild, bluntlobe cliff fern (Woodsia obtusa) loves growing on rock faces or on cliffs—hence the name. This is a good fern for new gardeners, because it's very easy to grow and can tolerate rocky soil.

Scientific classification

Species

Bluntlobe cliff fern (Woodsia obtusa)

Instantly identify plants with a snap

Snap a photo for instant plant ID, gaining quick insights on disease prevention, treatment, toxicity, care, uses, and symbolism, etc.

Download the App for Free

Perennial

Lifespan

Herb

Plant Type

Summer, Fall

Bloom Time

10 cm to 51 cm

Plant Height

30 cm

Spread

0 - 35 ℃

Ideal Temperature

Slow

Growth Rate

Images of Bluntlobe cliff fern

Quickly Identify Bluntlobe cliff fern

Lacy, bipinnate-pinnatifid leaves with bluntly lobed pinnules and gray-green color.

Fronds divided twice, creating a feathery texture, reaching 4 to 9 inches (10 to 23 cm).

Short, scaly stalks measuring 2 to 4 inches (5 to 10 cm) in length.

Round sori on the underside of fronds, covered by tan to dark brown tissue.

Overall height ranging between 6 to 12 inches (15 to 30 cm) for the plant.

Identify plants with a snap

Instantly identify plants with AI: Snap a photo, and get accurate results within seconds.

Download the App for Free

Care Guide for Bluntlobe cliff fern

Every week

Water

Partial sun

Sunlight

0 - 35 ℃

Ideal Temperature

Water: Bluntlobe cliff fern prefers well-hydrated soil in moderate humidity, thriving with consistent moisture similar to its woodland origins. Weekly watering is essential to mimic natural hydration, and outdoor growth allows it to benefit from rainfall, supporting its health during the active growing season.

Fertilize: For bluntlobe cliff fern, fertilize sparingly with balanced fertilizers at half-strength quarterly during spring/summer while avoiding dormant periods. Pre-water soil for absorption, apply evenly without direct frond contact, and reduce fertilization in fall, pausing in winter for optimal frond and root health.

Pruning: Bluntlobe cliff fern thrives with spring pruning to encourage growth and improve aesthetics. Dead or damaged fronds should be removed for better air circulation and disease prevention. Thinning crowded areas promotes new shoots, ensuring a robust and healthy plant overall.

Propagation: Bluntlobe cliff fern propagates successfully through division during its dormant period, requiring healthy fronds and roots. It prefers well-draining, humus-rich soil with a slightly acidic to neutral pH in shady areas. Consistent moisture post-planting is vital for establishing its lush foliage.

Repotting: Repot bluntlobe cliff fern in early spring during its active growth phase, every 2-3 years. Use a shallow, wide container, providing dappled light and consistent moisture post-repotting while avoiding waterlogging. Gentle care promotes healthy fronds in their new environment.

Get tips and tricks for your plants.

Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.

Download the App for Free