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Growing a frosty fern is best achieved by mimicking its natural cool, humid environment.
The frosty fern, also known as Selaginella kraussiana, isn’t actually a true fern but a spikemoss.
Learning how to grow a frosty fern means understanding it thrives on consistency and moisture.
For anyone wondering exactly how to grow a frosty fern, the secret lies in balancing humidity, light, and watering.
This guide will walk you through everything you need to know about how to grow a frosty fern successfully indoors.
Let’s dive in.
How to Grow a Frosty Fern: The Essentials
When it comes to how to grow a frosty fern, start by choosing the right location and soil.
This plant is native to South Africa and loves conditions that are cool and damp.
1. Light Requirements
Frosty ferns prefer bright, indirect light.
Direct sun will scorch the delicate blueish-green foliage with white tips.
A north or east-facing window is usually ideal.
If you’re learning how to grow a frosty fern, avoid deep shade as the plant may become leggy.
The white pigment on the leaf tips is actually a sign of stress from cooler temperatures, but it’s the look we love.
Provide consistent light and you’ll keep that frosted appearance.
2. Watering Needs
Keeping the soil evenly moist is crucial for how to grow a frosty fern successfully.
Never let it dry out completely.
Use room temperature water to avoid shocking the roots.
Water when the top half-inch of soil feels dry to the touch.
But don’t let the plant sit in standing water as that can cause root rot.
A self-watering pot or a pebble tray with water underneath can help maintain moisture.
This is one of the most critical steps in how to grow a frosty fern indoors.
3. Humidity and Temperature
High humidity makes growing a frosty fern much easier.
Aim for at least 50–60% humidity.
Misting the leaves daily or using a humidifier works wonders.
Temperatures between 60–75°F (15–24°C) are perfect.
Avoid cold drafts, heating vents, and sudden temperature swings.
Cooler temperatures between 55–65°F (13–18°C) encourage the white tip frosting to become more pronounced.
So if you want that signature icy look, keep it on the cooler side.
Common Mistakes When Learning How to Grow a Frosty Fern
Even experienced plant parents can stumble when figuring out how to grow a frosty fern.
Let’s fix the most frequent errors.
1. Overwatering Without Drainage
While the soil must stay moist, waterlogged roots will rot fast.
Always use a pot with drainage holes.
If you see yellowing fronds, you might be overwatering.
Let the soil get slightly damp, not soggy.
A moisture meter takes the guesswork out of how to grow a frosty fern correctly.
2. Low Humidity Causes Brown Tips
When the air is too dry, frosty ferns develop crispy brown leaf tips.
That’s a sign you need to increase humidity.
Group plants together or use a humidity tray.
Bathrooms and kitchens often provide the steamy environment this plant craves.
Understanding this is essential for mastering how to grow a frosty fern.
3. Too Much Direct Sun
Direct afternoon sun will bleach the leaves and cause the white tips to disappear.
The plant may also wilt quickly.
If you notice the fronds look pale or faded, move it farther from the window.
Bright, indirect light is the sweet spot for how to grow a frosty fern.
Propagating Your Frosty Fern for More Plants
Once you’ve mastered how to grow a frosty fern, you’ll want to share or expand your collection.
Propagation is straightforward.
1. Division Method
Gently remove the plant from its pot and separate the root ball into smaller clumps.
Each clump should have a few fronds and roots attached.
Replant each division in fresh, well-draining potting mix.
Water thoroughly and keep the humidity high until new growth appears.
This is the easiest way to multiply your frosty fern.
2. Stem Cuttings
Snip a healthy stem with at least two sets of leaves.
Place the cutting in a jar of water or directly into moist soil.
If using water, change it every few days to prevent bacterial growth.
Roots should form in a few weeks.
Then transplant into soil and continue caring for it as you learned when figuring out how to grow a frosty fern.
So, How to Grow a Frosty Fern Successfully?
Growing a frosty fern is all about replicating its native cool, humid understory.
Provide bright indirect light, keep the soil consistently moist, and maintain high humidity.
Avoid direct sun, cold drafts, and waterlogged soil.
With these tips, you now know exactly how to grow a frosty fern that stays lush and beautifully frosted.
Whether you’re a beginner or a seasoned plant lover, this charming spikemoss will reward your attention with its delicate, icy beauty.
Happy growing.