{"product_id":"dryopteris-erythrosora-koidzumiana","title":"Kerti páfrány - Dryopteris erythrosora 'Koidzumiana'","description":"\u003cp dir=\"auto\"\u003e\u003cstrong\u003eDryopteris erythrosora 'Koidzumiana'\u003c\/strong\u003e, also known as the \"autumn Japanese fern\" or \"red fern,\" is a cultivar of the species Dryopteris erythrosora from the Dryopteridaceae family. This evergreen perennial fern in mild climates is valued for its attractive foliage, with young fronds colored in shades of copper and pink, and for its adaptability to shady conditions. Native to East Asia, especially Japan, 'Koidzumiana' is a more compact and colorful variant than the typical species, making it ideal for shaded gardens, borders, rockeries, or as a houseplant.\u003c\/p\u003e\n\u003ch4 dir=\"auto\"\u003eAppearance of leaves, flowers, and fruits\u003c\/h4\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaves\u003c\/strong\u003e: The fronds are bipinnate, lance-shaped, measuring \u003cstrong\u003e30-50 cm\u003c\/strong\u003e long (shorter than the typical species). Young leaves appear in spring in bright shades of \u003cstrong\u003ecopper, pink, or bronze\u003c\/strong\u003e, gradually maturing to a \u003cstrong\u003eglossy green\u003c\/strong\u003e. On the underside, the spores (sori) are a distinct \u003cstrong\u003ered-orange\u003c\/strong\u003e, hence the name \"erythrosora\" (red spores). The fronds have a glossy texture and an elegant arrangement, arching gently.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlowers\u003c\/strong\u003e: Ferns do not produce flowers; reproduction occurs through spores.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruits\u003c\/strong\u003e: It does not produce fruits, but the sporangia (structures containing spores) are visible on the back of the fronds in reddish clusters and serve as a subtle decorative element.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 dir=\"auto\"\u003eGrowth characteristics\u003c\/h4\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight and width\u003c\/strong\u003e: Grows up to \u003cstrong\u003e30-45 cm tall\u003c\/strong\u003e and \u003cstrong\u003e30-60 cm wide\u003c\/strong\u003e, forming a compact, dense rosette with radiating fronds. It is smaller than other variants of the species.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVigor\u003c\/strong\u003e: Growth is \u003cstrong\u003eslow to moderate\u003c\/strong\u003e, with new fronds emerging annually in spring. It forms a sturdy clump that gradually spreads through short rhizomes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Evergreen perennial fern in mild climates (zones 7-9) or semi-evergreen in colder zones, where fronds may partially die back in winter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 dir=\"auto\"\u003eGrowing conditions\u003c\/h4\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eExposure\u003c\/strong\u003e: Prefers \u003cstrong\u003epartial to dense shade\u003c\/strong\u003e, ideal under trees or in shaded corners of the garden. Tolerates bright indirect light, but direct sun burns the delicate leaves. Indoors, place near north- or east-facing windows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoil\u003c\/strong\u003e: Requires \u003cstrong\u003efertile, well-drained\u003c\/strong\u003e soil rich in organic matter, with a slightly acidic to neutral pH (5.5-7). A mix of compost, peat, and garden soil is ideal. Tolerates moist soils but not waterlogged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatering\u003c\/strong\u003e: Water \u003cstrong\u003eregularly\u003c\/strong\u003e, keeping the soil consistently moist but without stagnation. In containers, water when the top 2-3 cm of soil are dry, usually every 5-7 days. The fern appreciates humidity but is more drought-tolerant than other fern species.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature\u003c\/strong\u003e: Hardy in \u003cstrong\u003ezones 5-9\u003c\/strong\u003e (down to -23°C), suitable for temperate climates, including Romania. In colder zones, mulch the rhizomes in winter for protection. Indoors, maintain temperatures between \u003cstrong\u003e15-24°C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 dir=\"auto\"\u003eCare and resistance\u003c\/h4\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistance\u003c\/strong\u003e: Resistant to cold and most pests, including deer and rabbits, due to its sturdy leaves. May be affected by \u003cstrong\u003epowdery mildew\u003c\/strong\u003e or \u003cstrong\u003eleaf spots\u003c\/strong\u003e in damp, poorly ventilated conditions. Tolerates urban pollution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFertilizing\u003c\/strong\u003e: Apply a balanced liquid fertilizer (e.g., 10-10-10), diluted by half, once a month during the growing season (spring-summer). Avoid over-fertilizing, which can harm the leaves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePruning\u003c\/strong\u003e: Remove dry or damaged fronds in spring to encourage new growth. Does not require extensive pruning, as its natural form is attractive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePests and diseases\u003c\/strong\u003e: Rarely affected but may attract slugs or snails in damp gardens. Use organic traps or remove manually. Check for mites in dry conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePropagation\u003c\/strong\u003e: Propagated by \u003cstrong\u003edividing rhizomes\u003c\/strong\u003e in spring or by \u003cstrong\u003espores\u003c\/strong\u003e, though the latter is slow and less practical. Divisions should include healthy roots and fronds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eDryopteris erythrosora 'Koidzumiana' is ideal for \u003cstrong\u003eshaded gardens\u003c\/strong\u003e, \u003cstrong\u003ewoodland landscapes\u003c\/strong\u003e, \u003cstrong\u003erockeries\u003c\/strong\u003e, \u003cstrong\u003eborders\u003c\/strong\u003e, or as a \u003cstrong\u003ehouseplant\u003c\/strong\u003e in containers. Its colorful spring foliage adds a warm contrast when combined with plants like hosta, astilbe, heuchera, or other green ferns. It suits Japanese gardens, naturalistic spaces, or near ponds due to its moisture tolerance. Indoors, it is an excellent decorative plant for shaded corners, with a subtle tropical effect. Its glossy leaves and red spores add textural interest year-round.\u003c\/p\u003e\n\u003ch4 dir=\"auto\"\u003eOrigin\u003c\/h4\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eDryopteris erythrosora\u003c\/strong\u003e is native to \u003cstrong\u003eEast Asia\u003c\/strong\u003e, including Japan, China, and Korea, where it grows in moist, shaded forests or on rocky slopes. The \u003cstrong\u003e'Koidzumiana' fern cultivar\u003c\/strong\u003e was selected for its more compact stature and more colorful foliage, being a rare variant likely named after a Japanese botanist or gardener. It is less common than other forms of the species but highly valued by collectors for its unique appearance.\u003c\/p\u003e\n\u003cp\u003ePot diameter: 14 cm\u003c\/p\u003e\n\u003cp\u003eHeight including pot: 30-40 cm\u003c\/p\u003e\n\u003cp\u003eThe actual size and color of the plant vary depending on the season.\u003c\/p\u003e","brand":"Secret Garden Outdoor","offers":[{"title":"Default Title","offer_id":54529247805766,"sku":null,"price":4100.0,"currency_code":"HUF","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0558\/5551\/3798\/files\/feriga-rosie-koidzumiana.jpg?v=1747842258","url":"https:\/\/secretgarden.ro\/en-hu\/products\/dryopteris-erythrosora-koidzumiana","provider":"Secret Garden Plant Shop","version":"1.0","type":"link"}