Doodia caudata is a species of dimorphic, evergreen fern in the family Blechnaceae, native to Australia and New Zealand. Upright clusters of fertile fronds reach 10 inches (25 cm) in length. It has been introduced to the Azores, Madeira and Sri Lanka.
Small rasp fern typically resists disease well and encounters relatively few insect pests. Its care is regarded as difficult because it requires a moist environment and frequent watering. However, the roots can rot if they are overwatered or if the environment lacks good ventilation. Small rasp fern is appropriate for people with some growing experience, as most people can keep it alive for a certain amount of time. Nevertheless, it may struggle to thrive and its leaves can dry out and become less healthy over time.
How to keep Blechnum Spinulosum.
Light
The small rasp fern comes from habitats such as forest understories or rocky sites that provide natural shade. It prefers Full Shade but can tolerate Partial Sun.
Temperature
Small rasp fern grows well in forest thickets. It is very sensitive to temperature and humidity; excessive heat, dry conditions, and strong sunlight can all distress it. In summer it needs adequate shading and a humid environment. Generally it does not require special care in winter, but an extended winter drought can still prove fatal to the plant.
Botanical profile.
- Plant Type
- Fern
- Life Cycle
- Perennial
- Genus
- Blechnum
- Family
- Aspleniaceae
- Hardiness Zone
- 8-11
- Mature Height
- 30 cm to 61 cm
- Mature Spread
- 30 cm to 49 cm
- Leaf Color
- Dark Green, Olive
- Leaf Type
- Evergreen
- Planting Time
- Spring, Summer, Autumn
