The Rooted Plant Shop
Blue Oil Fern 4”
Blue Oil Fern 4”
Each plant is unique. Size, shape, fullness, and variegation will vary.
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Microsorum thailandicum, commonly called blue oil fern, is a rare fern native to Southeast Asia known for its narrow, upright fronds with a deep blue, almost iridescent sheen. What makes this plant special is that metallic blue coloration—it reflects light in a way that gives it a subtle oil-slick effect, making it one of the most unique foliage ferns in a collection.
Light needs to be controlled to preserve that blue tone. Place it in a north or east-facing window where it gets gentle, consistent light without direct sun hitting the fronds. Under grow lights, use 5000K–6500K placed 12–18 inches from the top of the plant. In stronger light, the blue sheen can fade and appear more green. In lower light, growth slows but the color remains deeper and more saturated.
Watering and environment need to stay consistent with higher humidity. Keep the soil lightly moist, never soggy and never fully dried out, using a mix of succulent soil, perlite, and orchid bark to keep airflow while holding moisture. This plant reacts through its fronds—if they lose that blue sheen and look flat green, it’s getting too much light. If tips brown while the frond stays firm, it’s a humidity issue. If the base softens or fronds collapse, the roots are staying too wet rather than drying out.
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Beautiful plants I always buy my plants through rooted plant shop. that’s my go to shop
The book is done so well. I can’t imagine the time you spent putting this all together. You’re truly a gifted gardener. Thank so much for this. I’ve always gardened outside the house plants and succulents are new for me. So I really appreciate this book and your website with plants in certain lighting. Thanks for helping me succeed in my plants. I also bought a Micah’s. What beautiful plant. Packed nicely and secure. Thank you I’ll be back for more plants. In a true follower from Kansas.
My Black Velvet Alocasia arrived VERY well packaged, healthy and is already pushing out a new leaf! With all the helpful information listed on the site I was able to place it and care for it exactly as it is needed.
This arrived in great shape and vibrant color. Will be ordering again.
What a cool way to discover new plants! I love it!
I am stunned at the Ring of Fire's color. So pretty. She's looking like she handled the trip well and I can't wait to watch her grow.
Beautiful plant. Shipping was great. Plant was well protected for shipping. Even came with an instruction card on what you should do when the plant you unpacked it.
Mel and her plants are amazing with my plants it's taught me to love again. Giving life to something that blossoms into something so beautifully 😍
Plants and packaging NEVER disappoints!! Her books are the beat by far, my plants have benefited 1000% by what i have learned from Mel!!
Showed up better than i could of imagined . First time ordering carnivorous plants online and they showed up wonderfully