The Nephrolepis is an evergreen fern of small to medium size, native to East Asia and Oceania, widespread in areas with a tropical climate. It produces wide tufts, formed by long, odd-pinnate, triangular, foliage; each foliage is composed by small parallel, ribbon-shaped leaves, which diminish in size from the base of the foliage up to the apex, of pale green colour, with jagged and slightly curled margin. The young foliage develops first rolled up and unrolls as it grows.
Depending on the species, the leaves of nephrolepis can be from 25 to 80-90 cm long; they are arched and give origin to roundish bushes, very suitable to be cultivated in hanging baskets. Fern of easy cultivation, it is very much utilized as apartment plant, also because it seems to be very useful as it seems to absorb the harmful substances released by solvents, paints and household appliances.
The Nephrolepis can’t stand cold temperatures, and can’t stand minimum temperatures below 10-12°C, therefore they can be placed outdoors only during the mild spring and summer days. Like most ferns, they love the shade, therefore they are grown in an averagely luminous place, but far from the direct rays of the sun, which could irreversibly damage the leaves of our boston fern.
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It is advisable to keep the ground of our boston fern always moist, but not too wet; for a correct development the plant is also good to vaporize the canopy often; for watering and vaporizing let’s use water that is scarcely calcareous. Every 3-4 months we clean the entire plant, possibly placing the canopy under running water, to remove impurities and dust. From March to October we add a little fertilizer for green plants to the water of the watering every 15-20 days.
grow in good universal soil, lightened co perlite and shredded pieces of bark, which allow you to keep the soil soft and fresh. The specimens grown in pots tend to widen, therefore it is advisable to change the container every 2-3 years, choosing one slightly larger than the previous one.
If we want to multiply the nephrolepis it is necessary to take off the spores, which are produced under the foliage; more easily, portions of the head of leaves are practised, keeping some roots well developed for each portion practised.
Boston Fern – Nephrolepis: Parasites and diseases
The boston ferns fear the attack of mites and cochineal; in conditions of excessively wet soil can develop rottenness. Often ferns tend to become yellowish over the years, this fact may be due to iron chlorosis, favored by the use of limestone water, or simply the yellowing can be attributed to incorrect conditions of cultivation: low ambient humidity, low light, soil exhausted. Often the outer foliage dries up, starting from the tip: we remove all the damaged or slightly dried foliage.