Haleakala Holly Fern Plant Care
Athyrium haleakalae K.R.Wood & W.L.Wagner
Updated · Sources · How we source care data
Athyrium haleakalae one of six single-island endemic fern or lycophyte taxon found on Maui Island, Hawaii. It survives on vertical stream walls, especially near waterfalls.
Every 4–7 days
Filtered light, partial shade
60–75°F
50–70%
At a glance
How do you care for Haleakala Holly Fern?
Water Haleakala Holly Fern every 4–7 days, letting the top layer of soil dry out between waterings, and give it filtered light, partial shade. It prefers temperatures of 60–75°F (16–24°C) and 50–70% humidity. Fertilize it every 6 months during the growing season.
What Is the Haleakala Holly Fern?
Haleakala Holly Fern (Athyrium haleakalae) belongs to the Athyriaceae family within the Athyrium genus.
Haleakala Holly Fern displays a clumping, spreading fern growth habit, reaching up to 2 ft tall with a spread of approximately 3 ft. Haleakala Holly Fern produces non-flowering fern.
Leaf size: approximately 18 inches.
How Often Should You Water a Haleakala Holly Fern?
Athyrium haleakalae requires watering every 4–7 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 4–7 days
Let soil partially dry between waterings
What Light Does the Haleakala Holly Fern Need?
Haleakala Holly Fern thrives in filtered light, partial shade. Avoid placing Haleakala Holly Fern in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Filtered light, partial shade
What Temperature and Humidity Does the Haleakala Holly Fern Prefer?
Athyrium haleakalae grows best at temperatures of 60–75°F. Haleakala Holly Fern prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
60–75°F
Humidity
50–70%
What Soil Mix Works Best for a Haleakala Holly Fern?
Rich, well-draining soil with high organic matter content. Good drainage is essential for Haleakala Holly Fern to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Haleakala Holly Fern?
Feed Haleakala Holly Fern every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Haleakala Holly Fern?
Repot every 2-3 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Haleakala Holly Fern?
Haleakala Holly Fern can be propagated through division of rhizomes. Similar propagation techniques also apply to lady fern plant care, which shares the same genus.
Is the Haleakala Holly Fern Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Haleakala Holly Fern, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Haleakala Holly Fern?
Haleakala Holly Fern is susceptible to spider mites, aphids, scale insects. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Haleakala Holly Fern Need?
Haleakala Holly Fern grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Haleakala Holly Fern as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Haleakala Holly Fern is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Athyrium genus — compare its care with other Athyrium species on PlantoScan.
Athyrium is part of the Athyriaceae plant family — browse all Athyriaceae genera and species.
Haleakala Holly Fern produces blooms — browse other flowering plants.
More Athyrium Species
Other Athyrium species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Athyrium haleakalae K.R.Wood & W.L.Wagner, family Athyriaceae (first published in PhytoKeys 76: 116. 2017 [19 Jan 2017] [epublished]) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Haleakala Holly Fern, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 13a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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