The nephrolepis cordifolia, also known as the lemon button fern or fishbone fern is an easy to care for and hardy houseplant perfect for beginner gardeners. With its lush green fronds and compact size, this fern makes an excellent addition to any indoor plant collection. Read on to learn everything you need to know about caring for your own nephrolepis cordifolia.
Overview of the Nephrolepis Cordifolia
The nephrolepis cordifolia is a dwarf cultivar of the popular Boston fern. It is native to Asia and is characterized by its gracefully arching fronds which emit a lemony scent when crushed. These ferns typically grow to about 12 inches tall and 12 inches wide.
Some key traits of the nephrolepis cordifolia:
- Thrives in medium to bright, indirect light
- Prefers warm, humid conditions
- Grows best in acidic, moist soil that drains well
- Low maintenance and quite hardy
- Propagates easily by division of the rhizomes
- Non-toxic to pets
Providing the Right Growing Conditions
Fortunately, the nephrolepis cordifolia is not terribly fussy and will adapt to a range of household conditions. That said, providing the optimal environment will ensure your fern thrives.
Light
This fern does best in bright, indirect sunlight. An east or west-facing window is ideal, as it will receive gentle morning or afternoon sun. Direct sun will scorch the delicate fronds, so be sure to keep the fern shaded at all times. It can also tolerate low light, though growth may slow.
Temperature & Humidity
Warm temperatures between 60-80°F are preferred along with moderate to high humidity. The humidity levels found in bathrooms or kitchens will suffice. You can also place the pot on a pebble tray or use a small humidifier nearby.
Soil
Well-draining, acidic soil is best. Aim for a mix that retains moisture but never becomes waterlogged. Standard commercial potting mixes work well.
Water
Keep the soil consistently moist, taking care not to overwater. The fronds will start to brown and crisp if the plant gets too dry. Water thoroughly until it drips from the drainage holes, then wait for the top inch or two of soil to dry out before watering again.
Fertilizer
Apply a diluted liquid fertilizer every 2-3 months during spring and summer. Ferns are light feeders, so don’t overdo it.
Displaying Your Nephrolepis Cordifolia
The lush, graceful fronds of this fern make it a perfect tabletop or desktop plant. Place it among other low-light plants or allow it to stand alone as a focal point. The lemon button fern also looks fantastic in hanging baskets, where the arching fronds can trail over the sides.
Pruning and Maintenance
Fortunately, this plant requires very little pruning or maintenance. Remove any dead or damaged fronds at the base to encourage new growth. Dividing overcrowded plants every few years will stimulate growth and allow you to propagate new ferns.
Propagating Your Lemon Button Fern
Propagating nephrolepis cordifolia from division is quite simple. Carefully remove the entire plant from its pot and gently tease apart the root ball, dividing it into smaller sections while keeping as many roots intact as possible. Re-pot each new division in its own container using fresh potting mix. Water well and place in bright, indirect light.
Common Concerns
This hardy fern will thrive with basic care, but may experience a few issues if conditions are not ideal:
- Dry, brown fronds – Increase watering frequency and humidity
- Wilting fronds – May indicate either too much sun or overwatering
- Yellowing fronds – Usually a sign of too much sunlight
- Crispy fronds – More humidity needed
- Few new fronds – More fertilizer may be required
Fortunately, these problems are easily remedied by adjusting care. Your nephrolepis cordifolia will reward you for years to come if provided with the proper growing environment. It’s an excellent choice for beginning gardeners and makes a lush, graceful addition to any indoor plant collection.
Care Summary for Nephrolepis Cordifolia
Greg recommends:
0.5 cups every 7 days
< 6ft 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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Finding light for Erect Sword Fern in your home
Nephrolepis Cordifolia can tolerate being far from a window and light source.
Place it less than 6 feet from a south-facing window to ensure it receives enough light to survive .
Select your region to see how the current weather in your area affects the placement of Nephrolepis Cordifolia in your home .
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FAQ
Is Nephrolepis cordifolia an indoor plant?
Known as the Lemon Button Fern, Nephrolepis cordifolia ‘Duffii’ prefers bright, indirect or filtered light indoors, evenly moist soil, and air that is not dry (see below for ways to increase humidity around your plant).
How often do you water nephrolepis cordifolia?
How often to water your Nephrolepis Cordifolia. Nephrolepis Cordifolia needs 0.8 cups of water every 7 days when it doesn’t get direct sunlight and is potted in a 5.0″ pot.
Does Nephrolepis Cordifolia like sun or shade?
Plant Details
The spores are visible on the underside of the leaf, but this fern mainly propagates by spreading hairy runners. It will tolerate drier, poorer soil than most ferns. Hardy to 25°F. It does best in shade but will take sun if given ample water.
Are lemon button ferns easy to care for?
Yes, Lemon Button Ferns (Nephrolepis cordifolia ‘Duffii’) are generally considered easy to care for, making them a good choice for both beginners and experienced plant lovers.