Plant Care Narrowleaf Swordfern

Narrowleaf Swordfern

About Narrowleaf Swordfern

Narrowleaf Swordfern is a super rare houseplant 🌿 that needs lots of water to thrive. They do best in long-lasting, direct light ☀️ and should be less than 1 foot from a window.

Narrowleaf Swordfern likes soil that is good at retaining moisture. Your plant shouldn't need added fertilizers if you repot each time it doubles in size.

Taxonomy

Polystichum imbricans
Polystichum
Dryopteridaceae
Polypodiales

Also known as

Imbricate sword fern

How to care for Narrowleaf Swordfern

💦 Water

How often to water your Narrowleaf Swordfern

Water needs for Narrowleaf Swordfern
0.5 cups
every 7

Narrowleaf Swordfern needs 0.5 cups of water every 7 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.

Water 0.5 cups every
7

Does your plant get direct sunlight?

Select the pot size

5"
☀️ Light

Finding light for Narrowleaf Swordfern in your home

Light needs and placement for plant Narrowleaf Swordfern: 1ft from a window
1ft or less from
a window

Narrowleaf Swordfern love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Narrowleaf Swordfern does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Narrowleaf Swordfern in your home 🏡.

🪴 Nutrients

How to fertilize Narrowleaf Swordfern

Nutrient, fertilizer, and repotting needs for Narrowleaf Swordfern: 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 Narrowleaf Swordfern after it doubles in size or once a year—whichever comes first.

💡 FAQs
💦 Water Needs

Narrowleaf Swordfern is sensitive to dry soil and should be watered frequently. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.


☀️ Sunlight Needs

Narrowleaf Swordfern requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.


🐶 🐈 👶 Toxicity

Narrowleaf Swordfern is not known to cause harm to humans or pets. Regardless, if you, a family member, a cat, or dog has ingested any plant material, please consult a doctor or a veterinarian.


🪴 Soil

Narrowleaf Swordfern is very sensitive to dry soil, so choose a potting soil that retains moisture. A good soil will still drain well and contain lots of organic matter such as coco coir or sphagnum moss.


💩 Fertilizer

Narrowleaf Swordfern should be repotted after it doubles in size or once a year, whichever comes first. Fresh potting soil has all the nutrients your plant needs, so as long as it’s refreshed yearly, you shouldn’t need to use fertilizer. Remember, plants get their energy from sunlight, not fertilizer!


⬆️ ⬇️ Growth Pattern

Narrowleaf Swordfern grows vertically and new growth will emerge from the top of the plant.


🌦️ Growing Outdoors

USDA Hardiness Zone
Narrowleaf Swordfern can be grown outdoors in USDA Hardiness Zones 5a-9b. Find your local hardiness zone here.


🍂 Yellow Leaves

Yellow leaves aren’t always a reason to panic, and can be a normal part of a plant’s life cycle. Unless brand new leaves are turning yellow or all the leaves change color at once, it’s likely just your plant retiring old leaves.

If it seems like there’s a problem, the most likely cause of yellow leaves in Narrowleaf Swordfern is underwatering. The leaves may also appear to be curling or drooping. Yellow leaves can less often be caused by overwatering, nutrient deficiencies, or pests.

Give your plant a good drink and it should perk back up and download Greg to make sure your plant never goes thirsty again!


🧐 Troubleshooting

When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.

Inspect the soil moisture; too dry or too wet soil can cause problems.

Ensure the plant is getting the right amount of light, as too much or too little can stress it.

Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.


Care Summary for Narrowleaf Swordfern

Narrowleaf Swordfern


Greg recommends:

Water

0.5 cups every 7 days

Placement

< 1ft from a window

Nutrients

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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