Florida fern, F. of the marshes - Osmunda cinnamomea

Florida fern, F. of the marshes - Osmunda cinnamomea


the osmunda genus includes about ten species of deciduous ferns, widespread in the American continent and Asia. They form dense tufts, 100-150 cm high, made up of long, smooth arched stems, the young shoots are covered with a thin brown down; Osmunda cinnamomea has dimorphic fronds: the fertile fronds are bluish-green, they turn brown in autumn, before winter rest; the fertile fronds are light green in color, similar in shape to a panicle, they become an intense cinnamon color when the spores are ripe, and therefore of a dark color with the arrival of the cold. The stems have a rounded section, are bipinnate, with small oval or lanceolate leaves, rough to the touch. The tufts start from the roots, large fleshy rhizomes, which spread quite quickly.

Florida fern plants, or f. some swamps have a fairly slow growth, are rather rustic and can be easily found even in the wild; before planting the florida fern in our water garden it is good to consider the dimensions that the f. swamps take on over the years. This plant is very similar to O. regalis, also widespread in the wetlands of our country. The dried fronds of these ferns were, and are, used in soils for epiphytic plants.


For the best exposure of the florid fern it is good to plant in a shady or semi-shady place, even very bright, as long as it is not directly exposed to sunlight.

In general the osmunda cinnamomea, also known as f. marshes, they do not fear the cold very much, while they can be ruined by excessively hot summers; it is therefore good to plant the osmunda cinnamomea in a well-ventilated place and completely shade the specimens placed in partial shade in the hottest periods of the year.

  • Osmunda regalis

    OSMUNDA REGALIS L. OSMUNDACEAE Florid fern Large fern (60 - 180 cm) with large bushy stem. Large, bipinnatosette leaves, with large grooved petiole; the fertile ones have numbers ...


Plants belonging to the variety of osmunda cinnamomea generally they love loose, acidic soils rich in organic matter; it is advisable to plant it near an aquatic garden, so that the soil can enjoy constant humidity, especially in hot and dry periods.

If desired, it is also possible to cultivate osmundas in containers, however, considering providing a very large pot and watering very frequently, avoiding letting the soil dry out and constantly checking that there is a correct degree of humidity inside the pot, without however that water stagnation forms which could cause problems.


In nature, florida fern plants propagate through spores; the osmundas also produce numerous suckers, which can be taken at the beginning of spring; if desired, in autumn, it is also possible to divide the rhizomes, which must be immediately buried in the place chosen for cultivation, without proceeding with the first planting in a sheltered container.

Fern florida, F. of the marshes - Osmunda cinnamomea: Pests and diseases

Florida fern plants are sturdy and hardy and typically don't get attacked by pests or diseases. In excessively basic soils they can be subject to chlorosis; in this case, there are specific products on the market to be added to the water to regulate the acidity of the soil and ensure the correct pH for the specimens.

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