Ophioglossum lusitanicum, the least adder's-tongue, is a small fern of the family Ophioglossaceae. It is a pan-tropically species categorised as least concern by the IUCN (2001).
Least adder's-tongue typically shows strong disease resistance and is affected by relatively few insect pests. Its care is regarded as difficult because it needs a consistently moist environment and regular watering. The roots can rot if the plant is overwatered and the surrounding air is poorly ventilated. It is best suited to people with some cultivation experience, since most can keep it alive for a period of time. Still, the plant may struggle to truly thrive, and its leaves can dry out and lose vigor over time.
How to keep Ophioglossum Lusitanicum.
Light
Least adder's-tongue is native to habitats such as forest understories or rocky areas that provide natural shade. It prefers Full Shade but can tolerate Partial Sun.
Temperature
Least adder's-tongue does best in forest thickets. It is very sensitive to temperature and humidity; high heat, dry conditions, and strong sunlight can all make Least adder's-tongue uncomfortable. In summer it needs adequate shading and a humid environment. Generally, Least adder's-tongue does not require special care in winter, but an extended winter drought can still be fatal to the plant.
Pruning
The least adder’s-tongue requires careful management, which includes early spring pruning to remove dead fronds. This practice promotes growth and improves air circulation. To ensure the plant remains healthy, avoid heavy pruning, as it can cause stress. Proper pruning not only enhances the plant’s appearance but also minimizes the risk of disease and supports its vitality and longevity.
Botanical profile.
- Plant Type
- Fern
- Life Cycle
- Perennial
- Genus
- Ophioglossum
- Family
- Ophioglossaceae
- Hardiness Zone
- 7-10
- Mature Height
- 5 cm to 15 cm
- Mature Spread
- 2 cm to 5 cm
- Leaf Color
- Dark Green
- Leaf Type
- Deciduous
- Planting Time
- Spring, Summer, Autumn
- Native Area
- Tunisia, Turkey, Mauritania, Cyprus, Greece, Croatia, Morocco, Lebanon, Portugal, Italy, Spain, Albania, Azerbaijan, United Kingdom, Algeria, France
Other names.
