Healthy Korean Rock Fern

Korean Rock Fern

$18.99
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$18.99
  • Fine-Textured Foliage
  • Light Preference/Tolerated (Bright Indirect Light, Medium Light)
  • Average Watering Needs
  • Mature Height 12-24 Inches

Korean Rock Fern is not often thought of as an indoor plant. It can be grown outdoors successfully in zones 7-10. The colder hardiness zones can grow this fern, also known as Polystichum tsus-simense, as a houseplant that spends its summer outdoors. The delicate dark-green fronds mix well with other ferns or nicely contrast a shady mixed seasonal planting. Korean Rock Fern is native to East Asia and has been naturalized in Florida and Louisiana. 

Best Locations For Growing Korean Rock Fern

Ferns of all sorts enjoy high humidity and lower light levels. Rooms like the kitchen and bathroom are ideal for displaying this plant. Because Rock Fern is not considered toxic, it can be used in bedrooms and family rooms where pets and children spend time. Ferns are natural air filters and are good at filtering chemical gasses from indoor furnishings.

Korean Rock Fern Sunlight Requirements

Filtered light and low light levels are perfect for Korean Rock Fern. The dark green fronds will not tolerate exposure to direct sunlight. Place the plant in a north-facing window or east- or west-facing room away from the window.

Korean Rock Fern Care

Ferns like potting soil that is both rich and well draining. Indoor potting soil mixed in a 3:1 ratio with worm castings works well. Repot this fern in the spring when the roots grow from the bottom drainage holes. Take time to acclimate Korean Rock Fern when moving it outdoors for the summer. Gradually move it from deep shade to dappled shade. Always bring the plant indoors before the nighttime temperatures fall to 40 degrees F.

Watering Korean Rock Fern

Water this plant when the top 2-3 inches of soil feel dry. Thoroughly soak the soil and let the excess liquid drain out. Saucers should be emptied so that the roots do not sit in water. To keep the humidity high around ferns, mist the fronds daily with distilled water.

Feeding Korean Rock Fern

Slow-release granular fertilizer is an easy way to provide nutrition year-round to ferns. Mix the fertilizer into the soil at planting time or add it as a top dressing in the spring. Look for a balanced ratio of NPK at 10-10-10.

Korean Rock Fern Information

Light Exposure: Bright Indirect Light, Medium Light
Care Requirements: Easy
Watering Requirements: Average - Keep lightly moist. When the top 2 inches of the soil dries out.
Pet Friendly: No
Kid Friendly: No
Air Purifier: Moderate
Habit: Mounded
Growth Rate: Fast
Mature Height: 12-24 inches
Mature Spread: 12-24 inches
Flowering: No
Flower Color(s): None
Flower Shade/Description: Grown for Foliage
Fragrant: No
Foliage Type:
Foliage Color(s): Green
Foliage Description: Green
Temperature: Above 60 °F (Above 16 )
Humidity: Above Average to High (60% - 100%)
Common Name: Korean Rock Fern
Other Name(s):
Scientific Name: Polystichum tsus-simense
Plant Type: House Plant
SKU:
Fern_Korean.Rock-HP

Container Sizes

Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on; type of plant, time of year, last pruning & many other factors.

4.5 Pot

4.5" Pot
 Also Know As:
   4.5" Container

 Plant Age:
   ~ 6 months
 Plant Size:
   ~ 3"-6"
 Pot Size:
   ~ 4.5"H x 3.75"W
 Volume:
   1.42 quarts

Quart Pot

Quart Pot
 Also Know As:
   Quart

 Plant Age:
   ~ 1 year old
 Plant Size:
   ~ 4"-8"
 Pot Size:
   ~ 4.75"H x 4.5"W
 Volume:
   1.50 quarts

2.5 Quart

2.5 Quart
 Also Know As:
   2.5 Quart Pot

 Plant Age:
   ~ 1.5 year old
 Plant Size:
   ~ 8"-12"
 Pot Size:
   ~ 6.5"H x 6.5"W
 Volume:
   2.20-2.30 quarts

#1 Pot

#1 Pot
 Also Know As:
   #1 Container
    1 Gallon
 Plant Age:
   ~ 2 year old
 Plant Size:
   ~ 10"-14"
 Pot Size:
   ~ 7"H x 7.75"W
 Volume:
   2.26-3.73 quarts

#2 Pot

#2 Pot
 Also Know As:
   #2 Container
    2 Gallon
 Plant Age:
   ~ 2-3 year old
 Plant Size:
   ~ 12"-18"
 Pot Size:
   ~ 9.5"H x 9.5"W
 Volume:
   1.19-1.76 gallons

#3 Pot

#3 Pot
 Also Know As:
   #3 Container
    3 Gallon
 Plant Age:
   ~ 3-4 year old
 Plant Size:
   ~ 12"-30"
 Pot Size:
   ~9.5"H x 11"W
 Volume:
   2.32-2.76 gallons


For more detailed information, please click here.

Plant Addict Guarantee (Included On All Plant Orders)

Plant Addicts guarantees your plant(s) will arrive happy and healthy, but the plant(s) are being shipped through the mail and accidents happen. If the plant is dead, has dried out roots or the incorrect item was shipped just notify Plant Addicts within 3 days upon delivery. We may ask for pictures but will try to make it as easy as possible for you. Please note plant(s) with damaged branches or wilted leaves will not qualify for this guarantee. Plants are very resilient and will rebound quickly when cared for correctly.

For information on how to care for you new plant please check out our guide. Guide: How to Care for Your New Plant(s)

Plant Addicts Warranty - 1 Year (Extra Purchase Required)

We encourage all plant lovers to purchase the Plant Addicts Warranty whether you’re new or an expert. There are many variables outside our control and yours that can cause the demise of your plant(s). Examples would be hungry animals, drought, poor soil conditions, over watering, disease, insects & many other factors. The Plant Addicts Warranty is a 1 year warranty protecting you from all the unknowns and will replace your plant if it moves on to the plant afterlife.

The warranty is purchased on a per plant basis and must be purchased at the same time as the plant purchase. We will cover 100% of the price of the plant but the warranty does not cover shipping cost. Simply let us know if your plant has died within one year of receiving it and we’ll get you a new one shipped out. We may ask for photos for documentation purposes but again we’ll try to make it as easy as possible.

For more information, please go to our Shipping & Returns page at the bottom of the website.

Guide: How to Care for Your New Plant(s)

Planter Shipping

Standard Colors: 2-3 business days

Special Order Colors: 8 weeks - this is due to the planter being custom made with the color(s) of your choice

Please Note: On special orders there can not be any cancellations

Plant Shipping

Time of Order:

Summer Shipping

  • If there is extreme heat we’ll delay shipping.  
    • We’ll have to review what areas the plants are traveling through along with your location


Once your plant is shipped you’ll receive an email with tracking information. Depending on the above criteria we’ll ship your plant(s) towards beginning of the following week from your order. We put together this helpful guide of what to do when you receive your plants in the mail.

It is important to know that all of our plants are clearly labeled for which growing zones the plant can survive in. The plants are thoroughly trialed and tested in every growing zone before we state the plant can grow in a zone. Again, our #1 priority is to ship the plants to you healthy and ready to thrive in your location. So we will do everything in our power to do so.