Los tree ferns They are some of the most emblematic and ancient plants that can be grown in gardens full of mystery and beauty. Their imposing appearance, with large fronds emerging from a robust vertical rhizome, is reminiscent of the prehistoric forests where these creatures shared space with dinosaurs. In this article, you will learn in depth about the origins, main species, history, habitats, ornamental uses, and... All the care and considerations necessary for growing tree ferns successfully both outdoors and indoors with suitable conditions.
Origin and evolution: living relics of the past
Tree ferns emerged more than 300 million years ago. They are grouped mainly into two families: dicksoniaceae y Cyatheaceae. Currently, more than 500 species are known, mostly native to the Southern Hemisphere (Oceania, Asia, Southern Africa, Central and South America). Their evolution in humid, temperate climates fostered the survival of species that today can reach more than 10 meters in height in the wild. If you want to learn more about tree fern care, here you will find detailed information.
These ferns, also called arborescent o arboreal, develop a vertical trunk (actually an upright rhizome called stipe) which serves as support for the crown of fronds. Some species, such as Cyathea medullaris, have leaves that easily exceed 5 or 6 meters in length.
Main species of tree ferns
- dicksonia antarctica: The most cultivated and adaptable species. Resists low temperatures and transplants, with slow but sure growth.
- Fibrous dicksonia: Smaller relative, ideal for more sheltered places or small gardens.
- Dicksonia sellowiana, Dicksonia arborescens, Dicksonia squarrosa: Other species appreciated in gardening.
- cyathea cooperi: Fast growing, requires frost-free climates and special care when transplanting.
- Cyathea Australis, Cyathea caracasana, Cyathea medullaris: Common species in tropical and subtropical gardens.
A key aspect to differentiate them: the Dicksonias They have soft fluff on the stem of their leaves, while the Cyatheas They have stems with a scaly texture. To learn more about specific characteristics, see Characteristics and care of the Sadleria Cyatheoides Fern.
Location and design in the garden
The ideal location for tree ferns is in shaded or semi-shaded areas, protected from the direct sunlight, strong winds and severe frosts. They prefer gardens protected by tall trees, walls, or structures that filter the light. Outdoors, they can be grouped together to create a primeval forest atmosphere or combined with plants such as palm trees, banana trees, alocasias, orchids, and bromeliads for an exotic and elegant tropical effect. If you want to learn how to where to place a fern at home, we give you useful tips.
- They can be grown both outdoors and in bright interiors as long as it is guaranteed high humidity.
- Suitable for temperate temperature zones, but require protection against extreme temperatures or intense frosts.
- In a pot, they thrive if the plant is cared for. moisture and nutrition.
Optimal soil and substrate for tree ferns
The perfect substrate for tree ferns should be rich in organic matter, fluffy and freshA recommended mix consists of garden soil, peat, leaf mulch, and compost. It is essential that the soil retain moisture but count on efficient drainage to avoid waterlogging that can damage the rhizome. To improve aeration, it can be enriched with vermiculite or perlite.
- slightly acid pH favors the development of these species.
- It is recommended to enrich with vermiculite or perlite to improve aeration and drainage.
- In dry climates, mulch can help retain moisture.
Irrigation and humidity
Tree ferns require frequent and abundant watering, especially in summer and in dry climates. The key is to maintain both the substrate and the wet rhizome (trunk)With Dicksonias, it's best to water from the crown so the water soaks the trunk and eventually moistens the soil. Cyatheas prefer moisture at the roots, but the trunk also absorbs water. For more details, see fern care.
- High humidity (greater than 50%) It's essential. If the air is dry, it's recommended to spray water around the plant, especially indoors.
- They do not tolerate drought or environments dried out by heating.
- Avoid permanent waterlogging, but water before the soil becomes completely dry.
Temperature and climatic resistance
The optimal range for tree ferns is in temperate temperatures and humid environmentsDicksonias can withstand light frosts and survive short periods of cold; however, if temperatures drop significantly, it is advisable to protect the crown with plant mulch. Cyatheas, on the other hand, are more sensitive to frost and require protection in a greenhouse or indoors during harsh winters. To learn more about their care, check out Caring for Cyrtomium Falcatum.
- Avoid night temperatures below 7°C in most species.
- Tropical species require temperate nights, without falling below 15°C.
Pruning, fertilization and maintenance
Tree ferns They do not need specific pruning. Dried fronds can be removed to improve aesthetics, although it is not a problem to leave them as they serve as a refuge for auxiliary garden fauna. Fertilization is not essential if they are planted in fertile soil, although they will appreciate occasional contributions of organic fertilizerIn pots, monthly fertilization during spring and summer improves its vigor. For more recommendations, see Basic care of the Boston fern.
- They do not require continuous care, but they do require monitoring of humidity.
- Lack of humidity or excess sun manifests itself in burning or falling of the fronds.
Propagation and transplant
La reproduction Tree fern propagation is done by spores, a slow method that requires patience and very stable environmental conditions. Dicksonias can be transplanted by cutting the trunk, as long as the crown is preserved, as the new specimen will produce roots and shoots. This process is internationally regulated due to its botanical value. For more information, visit caring for indoor ferns.
Cyatheas do not tolerate stem transplanting and are propagated only by spores; however, they grow much faster.
Ecological benefits and symbolism
Sow tree ferns Not only does it beautify green spaces, but it also contributes to the conservation of endangered species and improves local environmental quality, increasing biodiversity and creating humid microclimates beneficial to other plants and fauna. Furthermore, Golden Polypodium We find another species that shares its ecological and decorative importance.
Its presence symbolizes longevity, resilience, and the continuity of life throughout time, evoking myths and traditions linked to its ancient history.
Currently, many tree ferns are threatened in their natural habitat, so including them in gardens is an act of active conservation. Growing tree ferns is betting on a exotic, lush and sustainable garden, connected to our planet's natural heritage. Whether in an outdoor space, a shady corner of the home, or as part of a restoration project, its presence provides structure, freshness, and an air of mystery that remains unchanged over the years.