Parablechnum chilense
Care, watering, light and tips for Parablechnum chilense on Floravia.
Quick facts
- Family: Blechnaceae
- Difficulty: Moderate care
- Watering: every 3 days
- Light: Partial shade
- Temperature: 10–30 °C
About Parablechnum chilense
Parablechnum chilense, commonly known as the Chilean hard fern or 'costilla de vaca', is a robust, large perennial fern native to Chile and Argentina. It is characterized by its upright, leathery, dark green fronds, which can reach up to 1.5 meters in length, creating a dramatic visual impact. It is ideal for shady gardens, pond margins, or as a focal plant in large pots, adding lush texture and a prehistoric touch to the landscape.
Native range
Chile and Argentina
Care tips
This fern prefers partial to full shade, avoiding intense direct sunlight which can scorch its fronds. It requires consistently moist but well-drained soil, rich in organic matter; never allow the substrate to dry out completely. A common mistake is planting it in heavy, poorly draining soils, which can lead to root rot. Protect from strong winds and severe frosts, especially when young.
How to save a dying Parablechnum chilense
- Warning signs
- Dry, brittle fronds with brown, curled tips. Stunted growth, pale coloration. Absence of new fronds.
- First aid
- Move to a more humid and shady spot. Water with chlorine-free water, keep substrate consistently moist, but not waterlogged. Mist the fronds.
- What kills it
- Dry air and dry substrate. Direct sun or drafts. Chlorinated water or over-fertilization. Constant waterlogging.
- Can it be saved?
- Yes, if roots are not completely dry or rotted. Recovery is slow, but new fronds are possible with proper care.