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Description
Dryopteris Crassirhizoma, also known as the Thick-Stemmed Wood Fern, is a species of fern native to Japan, Korea, and China. It is a deciduous fern that can grow up to 3 feet tall and 2 feet wide. The fern’s unique appearance comes from its thick rhizome, which can grow up to 4 inches in diameter, and its dark green fronds that are triangular and pinnate. The Dryopteris Crassirhizoma is a hardy fern that can survive in various conditions, making it an ideal choice for gardeners who want to add a touch of distinctiveness to their garden.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Pteridophyta |
| Class | Polypodiopsida |
| Order | Polypodiales |
| Family | Dryopteridaceae |
| Genus | Dryopteris |
Appearance
The Dryopteris Crassirhizoma has a unique appearance that sets it apart from other fern species. Its thick rhizome, which resembles a trunk, can grow up to 4 inches in diameter and is covered in brown scales. The fronds are dark green, triangular, and pinnate, with a length of up to 2 feet and a width of up to 1.5 feet. Each frond has several leaflets that are lance-shaped and serrated. The fern’s overall appearance is robust and striking, making it a popular choice for landscaping.
Care Guide
The Dryopteris Crassirhizoma is a hardy fern that can adapt to various conditions. Here are some tips on how to care for this fern:- Water: The fern requires moderate watering, ensuring that the soil is moist but not waterlogged.- Fertilization: The fern does not require frequent fertilization. However, adding compost or slow-release fertilizer in the spring can help promote growth.- Soil: The fern prefers well-draining, moist soil with a pH level of 5.5 to 7.0.- Sunlight: The fern thrives in partial to full shade, making it an ideal choice for shady spots in the garden.- Hardiness Zones: The fern can grow in USDA Hardiness Zones 5 to 8.
Common Pests & Diseases
The Dryopteris Crassirhizoma is a hardy fern that is not usually affected by pests or diseases. However, it may be susceptible to scale insects, spider mites, and slugs. To prevent these pests, regularly inspect the fern and remove any infested leaves or branches. In terms of diseases, the fern may develop leaf spots or root rot if it is exposed to prolonged periods of wetness. To prevent these diseases, ensure that the soil is well-draining and avoid overwatering.
Habitat
The Dryopteris Crassirhizoma is native to Japan, Korea, and China, where it grows in forests, meadows, and rocky areas. The fern prefers moist soil and partial to full shade, making it an ideal choice for woodland gardens or shady spots in the garden.
Question and Answer
Q: Can the Dryopteris Crassirhizoma tolerate frost?
A: Yes, the fern can tolerate frost and is hardy in USDA Hardiness Zones 5 to 8.
Q: Can the fern grow in full sun?
A: No, the fern prefers partial to full shade and can scorch in direct sunlight.
Q: How often should I water the fern?
A: The fern requires moderate watering, ensuring that the soil is moist but not waterlogged. Water the fern when the top inch of soil is dry.
Q: Does the fern require frequent fertilization?
A: No, the fern does not require frequent fertilization. However, adding compost or slow-release fertilizer in the spring can help promote growth.
Related Plants
– Dryopteris Erythrosora- Dryopteris Filix-Mas- Dryopteris Goldiana- Dryopteris Marginalis
References
– “Dryopteris Crassirhizoma.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b539.- “Dryopteris Crassirhizoma.” Plant Lust, 2021, plantlust.com/plants/dryopteris-crassirhizoma/.- “Dryopteris Crassirhizoma.” Royal Horticultural Society, www.rhs.org.uk/Plants/141387/Dryopteris-Crassirhizoma/Details.
