Pteridaceae
Poiret's Maidenhair Fern (Adiantum poiretii)
Adiantum poiretii
A maidenhair for constantly moist spots: light shade or bright indirect light, and a humus-rich mix that never dries out but drains well. Keep it out of strong sun, wind and dry air. There is no species-specific growing guide, so follow general maidenhair care.
Every 3 days
Partial shade
° - °C
% - %
Categories
What is Poiret's maidenhair fern?
Poiret's maidenhair fern (Adiantum poiretii) is a medium-care plant from the Pteridaceae family. Adiantum poiretii is a maidenhair fern in the Pteridaceae family with one of the widest ranges in its genus: tropical and subtropical America from Mexico to Uruguay and Chile, much of sub-Saharan Africa, Madagascar and the Indian Ocean islands, south-west Arabia, southern India and Sri Lanka. It is...
Poiret's maidenhair fern grows up to 75cm, watering every 3 days. It is suitable for indoor environments and safe for pets.
Unlike many popular species, Poiret's maidenhair fern is safe to keep around pets. Without adequate drainage, root rot can develop within 7 days.
How to Care for Poiret's maidenhair fern?
TLDR: Poiret's maidenhair fern needs Partial shade, watering every 3 days, and temperatures between 15-30°C with 40-70% humidity.
How Often Should You Water Poiret's maidenhair fern?
Keep the mix evenly moist, watering every 2 to 4 days in warm weather; water less in winter but never let it dry out completely. Do not leave water standing in the saucer, which rots the rhizome.
How Much Light Does Poiret's maidenhair fern Need?
Light shade or bright indirect light, like a streamside under trees. Direct sun scorches the fronds; deep shade weakens the plant.
What Is the Best Soil for Poiret's maidenhair fern?
A loose, humus-rich mix that stays moist but drains freely: leaf mould or compost with fine bark or coir and some coarse sand. In the wild it also grows on wet rocks and walls.
What Pot Should You Use for Poiret's maidenhair fern?
A wide, fairly shallow plastic or glazed pot (it dries more slowly than terracotta) with drainage holes, so the creeping rhizome can spread.
What Is Poiret's maidenhair fern and Where Does It Come From?
Adiantum poiretii is a maidenhair fern in the Pteridaceae family with one of the widest ranges in its genus: tropical and subtropical America from Mexico to Uruguay and Chile, much of sub-Saharan Africa, Madagascar and the Indian Ocean islands, south-west Arabia, southern India and Sri Lanka. It is a mountain fern, found at roughly 1,150-2,700 m on moist banks of permanent streams, wet rocks and walls, in light shade. The rhizome creeps and sends out slender underground runners that start new clumps. The arching fronds reach 75 cm, with a shiny dark chestnut stalk and a blade divided up to five times into small fan- to kidney-shaped segments. The sori sit along the lobe margins over a yellow powder, a detail that separates it from the common maidenhair (Adiantum raddianum). It has no flowers and reproduces by spores.
How to Propagate Poiret's maidenhair fern?
Division
The species sends out underground runners; the small clumps that form along them are the easiest to separate.
- 1 In early spring, lift the plant from its pot
- 2 Cut sections of the creeping rhizome, each with roots and a few fronds
- 3 Pot them in a moist, humus-rich mix
- 4 Keep shaded and humid until new fronds appear
Materials needed:
Spores
Slow process; use clean water and sterilised containers to avoid moulds and algae.
- 1 Collect spores when the marginal sori are ripe by letting a frond dry on paper
- 2 Scatter them over fine, sterilised, moist mix
- 3 Cover with glass or clear plastic and keep warm (about 21 °C) in indirect light
- 4 Prick out the young plants once the first fronds appear
Materials needed:
How Big Does Poiret's maidenhair fern Grow?
TLDR: Poiret's maidenhair fern can reach up to 75cm tall with Medium growth rate.
Max height
75cm
Foliage
Evergreen
Plant Uses
Ornamental
Great for decoration
Is your plant showing symptoms?
Click on the symptom to discover possible causes:
What Diseases Commonly Affect Poiret's maidenhair fern?
TLDR: Poiret's maidenhair fern is susceptible to 2 known diseases. Monitor regularly for early detection.
Scale Insects
Scale insects are small sap-sucking pests that appear as brown, shell-like bumps on plant stems and leaves. There are over 25 species, divided into armored (hard) and unarmored (soft) scales. They feed by piercing plant tissue and extracting sap, which weakens the plant and can lead to yellowing, stunted growth, and even death if left untreated. They also excrete honeydew, which attracts ants and promotes sooty mold growth.
Root Rot
Root rot is a serious fungal disease that affects the root system of plants, causing them to decay and die. It is primarily caused by overwatering, poor drainage, or soil-borne fungi such as Pythium, Phytophthora, Rhizoctonia, and Fusarium. The disease thrives in waterlogged conditions where roots are deprived of oxygen, making them susceptible to fungal infection.
Fun Facts
It is named after Jean Louis Marie Poiret (1755-1834), a French priest and botanist
The type specimen was collected in Chile by Adelbert von Chamisso
It is one of the most widespread maidenhairs: from Mexico to Uruguay, across Africa and on to India and Sri Lanka
Frequently asked questions
Does Adiantum poiretii like sun?
How often should I water Poiret's maidenhair fern?
How do I tell Adiantum poiretii from the common maidenhair?
Is maidenhair fern toxic to cats and dogs?
Compare with similar plants
| Attribute | Difficulty | Light | Watering | Pet Safe |
|---|---|---|---|---|
| Dark Fieldcap | Medium | Low light | 2d | ⚠️ |
| Azalea | Medium | Partial shade | 3d | ⚠️ |
| Muriel's Bamboo | Medium | Partial shade | 3d | ✓ |
| Bougainvillea | Medium | Direct sun | 7d | ⚠️ |
Choose & Compare
Sources & References
- J.P. Roux, Swaziland Ferns and Fern Allies (2003) — Adiantum poiretii (JSTOR Global Plants)
- Kew POWO — Adiantum poiretii Wikstr.
- GBIF — Adiantum poiretii Wikstr. (Catalogue of Life; helecho culantrillo / helecho de pozo)
- NYBG — Pteridophytes of Mexico monograph: Adiantum poiretii
- Fine Gardening — Adiantum (genus cultivation)
- ASPCA — Maidenhair fern (non-toxic)
