Propagation
Place spores on sterilised sphagnum moss or peat moss and cover with glass and keep moist. In 4 to 6 weeks the prothallus appears.
Divide rhizomes in to lengths during spring and seal wounds to prevent fungal infection. Plant upwards in well drained moist soil, apply bottom heat.

Botanic information
Leaf: The dark green fronds are pinnate to bipinnate, up to 1 m (3 ft) long by 500 mm (20 in) wide with a stout scaly pale brown stipe up to 400 mm (1 ft) or more long. The fronds are broadly ovate in outline and have 10 to 15 pairs of linear-lanceolate pinnae with an acuminate apex and a short petiole. The upper pinnae are deltoid and the sessile lanceolate pinnules have serrated margins and appear on older plants.

Flower: The fertile fronds produce linear sori in pairs back to back on the lower part of the veinlets on the underside. The thin indusium is linear and the sporangia are brown. They appear during summer or sporadically throughout the year in tropical regions.

Fruit: The spores are produced in the curved or straight sporangium during the sporophyte stage of the fern life cycle and appeared in opposite pairs on the lower part of the underside of the fertile pinnules. The spores are very small (like fine dust) and are released from the sori when mature and dispersed by wind or water.

FERNS
General cultural requirements for ferns
Temperature
The ideal temperature required for ferns ranges from 15.5ş to 22ş C (60ş to 70şF); above and below these temperatures the ferns tend to suffer.

Light
Naturally a fern receive bright dappled light and for successful growth around a home bright indirect light is preferred. Ferns do poorly if grown in the shade.

Water
Ferns require constantly moist, well drained soils but not wet or waterlogged as this promotes rot. Ferns like the water to pass by the roots regularly.

Humidity
Ferns need a humid environment and do poorly in dry air. Humidity may be maintained for potted plants by regular misting of the fronds or by placing the container above a saucer filled with water. In the outdoors maintain moist soils or in hot weather outside spray the area with a garden hose for a short period regularly.

Re-potting
Re-pot ferns when the roots have filled the container, preferable during spring and use a well drained loam based soil mix with added leaf mould. When planting, be careful not to bury the crown of the plant.
When fertilising, ferns prefer a little and regular liquid fertiliser during the growing period and this will improve pale fronds and weak growth.

Soil
Generally ferns prefer a heaver well drained soil type with ample organic matter tending acidic. Sandy soil types require regular mulching and heavy clay soils require the addition of gypsum and organic matter in conduction with cultivation to make it more friable. They will tolerate most soil types including granite or basalt based and some species are found in limestone base soils. All require organic material and moisture.