Cascade Rockbrake Plant Care
Cryptogramma cascadensis E.R.Alverson
Updated · Sources · How we source care data
Cryptogramma cascadensis is a species of fern known by the common names Cascade parsley fern and Cascade rockbrake.
Every 4–7 days
Partial to full shade
50–75°F
60–80%
At a glance
How do you care for Cascade Rockbrake?
Water Cascade Rockbrake every 4–7 days, letting the top layer of soil dry out between waterings, and give it partial to full shade. It prefers temperatures of 50–75°F (10–24°C) and 60–80% humidity. Fertilize it every 8 months during the growing season.
What Is the Cascade Rockbrake?
Cascade Rockbrake (Cryptogramma cascadensis) belongs to the Pteridaceae family within the Cryptogramma genus.
Cascade Rockbrake displays a low rosette, spreading growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Cascade Rockbrake produces non-flowering.
Leaf size: approximately 6 inches.
How Often Should You Water a Cascade Rockbrake?
Cryptogramma cascadensis 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 Cascade Rockbrake Need?
Cascade Rockbrake thrives in partial to full shade. The optimal light range is 100–500 lux. Avoid placing Cascade Rockbrake in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Partial to full shade
100–500 lux
What Temperature and Humidity Does the Cascade Rockbrake Prefer?
Cryptogramma cascadensis grows best at temperatures of 50–75°F. Cascade Rockbrake prefers humidity levels of 60–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
50–75°F
Humidity
60–80%
What Soil Mix Works Best for a Cascade Rockbrake?
Well-draining, acidic soil with high organic matter content. Good drainage is essential for Cascade Rockbrake to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Cascade Rockbrake?
Feed Cascade Rockbrake every 8 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 8 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 Cascade Rockbrake?
Repot every 2-3 years in early 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 Cascade Rockbrake?
Cascade Rockbrake can be propagated through spores. Similar propagation techniques also apply to american rock brake plant care, which shares the same genus.
Is the Cascade Rockbrake Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Cascade Rockbrake, 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 Cascade Rockbrake?
Cascade Rockbrake is susceptible to spider mites, 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 Cascade Rockbrake Need?
Cascade Rockbrake grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Cascade Rockbrake as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Cascade Rockbrake 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 Cryptogramma genus — compare its care with other Cryptogramma species on PlantoScan.
Cryptogramma is part of the Pteridaceae plant family — browse all Pteridaceae genera and species.
Cascade Rockbrake copes with lower light than most plants — browse the full list of low-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Cryptogramma cascadensis E.R.Alverson, family Pteridaceae (first published in Amer. Fern J. 79: 95, fig (1989)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Cascade Rockbrake, 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 12a, 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.
Identify Plants Like the
Cascade Rockbrake Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species