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Description
Cryptogramma Stelleri, commonly known as Rock Brakes, is a fern species that belongs to the family Pteridaceae. This perennial fern is native to North America and is commonly found in rocky habitats, including cliffs, ledges, and talus slopes. It has a unique appearance and is a popular choice among gardeners who love a touch of the wild in their landscapes.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Pteridophyta |
| Class | Pteridopsida |
| Order | Pteridales |
| Family | Pteridaceae |
| Genus | Cryptogramma |
Appearance
The Rock Brakes fern is small and delicate, measuring only 10-30 cm in height. Its fronds are triangular and divided into small, leathery, dark green leaflets. The fronds emerge from a rhizome, which is a horizontal stem that grows underground. The rhizome is covered with reddish-brown scales, which give it a unique appearance. The Rock Brakes fern produces spores on the underside of its fronds, which can be seen in late summer and early fall.
Care Guide
The Rock Brakes fern is relatively easy to care for and can be a great addition to any garden. Here are some tips for caring for your Rock Brakes fern:
- Water: Keep the soil moist but not waterlogged. Water when the top inch of soil feels dry to the touch.
- Fertilization: Use a balanced fertilizer once a month during the growing season to promote healthy growth.
- Soil: Plant your Rock Brakes fern in well-draining soil that is rich in organic matter.
- Sunlight: The Rock Brakes fern prefers partial to full shade. Avoid direct sunlight, which can scorch the leaves.
- Hardiness Zones: The Rock Brakes fern is hardy in USDA zones 5-9.
Common Pests & Diseases
The Rock Brakes fern is relatively pest and disease-resistant. However, it can be susceptible to fungal diseases, such as rust and leaf spot, if the soil is too wet. Here are some common pests and diseases to watch out for:
- Slugs and snails: These pests can damage the leaves of your Rock Brakes fern. Use a slug and snail bait to control them.
- Mites: Mites can cause yellowing and curling of the leaves. Use an insecticidal soap to control them.
- Rust: Rust is a fungal disease that causes orange spots on the leaves. Remove infected leaves and treat the plant with a fungicide.
- Leaf Spot: Leaf spot is a fungal disease that causes brown spots on the leaves. Remove infected leaves and treat the plant with a fungicide.
Habitat
The Rock Brakes fern is native to North America and is commonly found in rocky habitats, including cliffs, ledges, and talus slopes. It grows in well-draining soil that is rich in organic matter. The fern prefers partial to full shade and is hardy in USDA zones 5-9.
Question and Answer
Q: Can the Rock Brakes fern be grown indoors?
A: It is possible to grow the Rock Brakes fern indoors, but it prefers a cooler temperature and higher humidity than most indoor environments provide. It is best grown outdoors in a shady spot.
Q: Can the Rock Brakes fern be propagated?
A: Yes, the Rock Brakes fern can be propagated by division. Divide the rhizome in early spring and plant the divisions in well-draining soil.
Q: Can the Rock Brakes fern tolerate drought?
A: No, the Rock Brakes fern prefers moist soil and cannot tolerate drought. Water regularly to keep the soil moist.
Q: Is the Rock Brakes fern toxic to pets?
A: No, the Rock Brakes fern is not toxic to pets.
Related Plants
- Cryptogramma Acrostichoides
- Cryptogramma Cascadensis
- Cryptogramma Sitchensis
- Cryptogramma Stelleri
References
- “Cryptogramma Stelleri.” Missouri Botanical Garden. http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=j870
- “Rock Brake Fern.” American Fern Society. https://www.amerfernsoc.org/ferns-rock-brake-fern/
- “Cryptogramma Stelleri.” Flora of North America. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233500358
