Plant Care Bluntlobe Cliff Fern

Bluntlobe Cliff Fern

About Bluntlobe Cliff Fern

Bluntlobe Cliff Fern is a super rare houseplant 🌿 that is easy to grow and needs regular watering to thrive.

Bluntlobe Cliff Fern belongs to the Physematium genus, and is native to North America.


Physematium obtusum

Also known as

Bluntlobe cliff fern and Western cliff fern

How to care for Bluntlobe Cliff Fern


How often to water your Bluntlobe Cliff Fern

Water needs for Bluntlobe Cliff Fern
0.5 cups
every 9

Bluntlobe Cliff Fern needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Bluntlobe Cliff Fern

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Bluntlobe Cliff Fern in your home

Light needs and placement for plant Bluntlobe Cliff Fern: 3ft from a window
3ft or less from
a window

Bluntlobe Cliff Fern may have difficulty thriving, and will drop leaves 🍃, without ample sunlight.

Place it less than 3 feet from a south-facing window to maximize the potential for growth.

Select your region to see how the current weather in your area affects the placement of Bluntlobe Cliff Fern in your home 🏡.


How to fertilize Bluntlobe Cliff Fern

Nutrient, fertilizer, and repotting needs for Bluntlobe Cliff Fern: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Bluntlobe Cliff Fern after it doubles in size or once a year—whichever comes first.

Difficulty Level

Bluntlobe Cliff Fern is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Water Needs
Growth Pattern
Growing Outdoors

Care Summary for Bluntlobe Cliff Fern

Bluntlobe Cliff Fern

Bluntlobe Cliff Fern

Greg recommends:


0.5 cups every 9 days


< 3ft from a window


Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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