Vandenboschia speciosa, synonym Trichomanes speciosum, commonly known as the Killarney fern, is a species of fern found widely in Western Europe. It is most abundant in Ireland, Great Britain, Brittany, Galicia, Canary Islands, Madeira and the Azores, but is also found in other locations including France, Spain, Portugal and Italy. It is a relict endemic European species with a disjunct distribution, having had a much wider distribution before the climate changes of the Tertiary and Quaternary periods.
Killarney fern is typically fairly resistant to disease and is affected by relatively few insect pests. Its care is considered difficult because it needs a moist environment and frequent watering. However, its roots are susceptible to rot if overwatered or if the surrounding air is not well ventilated. It is best for growers with some experience, as most people can keep it alive only for a limited time. Even so, the fern may struggle to thrive and its leaves can dry out and become less healthy over time.
How to keep Trichomanes Speciosum.
Light
Killarney fern is native to habitats like forest understories or rocky areas that provide natural shade. It prefers Full Shade but can tolerate Partial Sun.
Temperature
Killarney fern does well in forest thickets. It is very sensitive to temperature and humidity; high temperatures, dry conditions, and strong sunlight can all stress the fern. In summer it needs appropriate shading and a highly humid environment. Generally it does not need special treatment in winter, but an extended winter drought can still kill the plant.
Botanical profile.
- Plant Type
- Fern
- Life Cycle
- Perennial
- Genus
- Trichomanes
- Family
- Hymenophyllaceae
- Hardiness Zone
- 7-10
- Mature Height
- 10 cm to 30 cm
- Mature Spread
- 20 cm to 40 cm
- Leaf Color
- Dark Green
- Leaf Type
- Evergreen
- Planting Time
- Summer, Autumn
- Native Area
- Germany, Italy, Spain, Czech Republic, France, Ireland, United Kingdom, Portugal
Other names.
