hairy mountain fern

Parathelypteris nipponica var. borealis

Thelypteris nipponica var. borealis 'Hiyama' is a plant native to parts of Asia. Below is information regarding this plant's growth characteristics, propagation methods, cultivation methods, garden uses, and major pests and diseases and control methods.

Growth Characteristics
- Environment: 'Hiyama' prefers partial shade and requires moderate humidity. It thrives in well-drained soil, and providing adequate moisture and shade is important.
- Temperature: It prefers cool temperatures but can tolerate some cold.
- Growth: It grows primarily in spring and summer, and growth slows down in autumn.

Propagation Methods
- Spore Propagation: Thelypteris nipponica can be propagated via spores. Collect mature spores and scatter them on moist soil to induce germination.
- Root Division: It can be propagated by dividing the root mass; this method is effective when rapid multiplication is desired. Cultivation Method
- Soil: Well-drained soil rich in organic matter is ideal. Mulch around the plant as needed to maintain moisture.
- Watering: Water moderately, taking care not to overwater. Extra caution is required, especially during the summer.
- Fertilizer: Generally, it does not require much fertilizer, but a small amount of all-purpose fertilizer can be used in the spring if necessary.

Garden Use
- Landscape Use: Hiiama is primarily used as a ground cover in shady areas. It grows well under conifers or around large trees.
- Decoration: It is suitable for beautifying shady garden spaces and can be arranged harmoniously with other shade plants.

Important Pests and Control Methods
- Pests and Diseases: It is generally not significantly affected, but diseases such as root rot may occur if moisture is excessive.
- Control Methods: Root rot can be prevented through proper drainage management and ventilation. If disease occurs, it is recommended to cut off the diseased parts and replace the diseased soil.

By referring to the information above, you can effectively manage and grow the hairy mountain fern 'Hiiama'.

Plant Family	Polypodiaceae
Height	40cm
Colors	sporophyte
Bloom Period	June to September (spore period)
Water Needs	commonly
Exposure	semi-shaded area
Freezing Resistance	-20°C

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