Plant Passport
Maidenhair Fern
Adiantum raddianum
LightBright
Water7-10d
PetCheck
PP ADIA NTUM RADD
Issued 2026 · Valid while cared for
Maidenhair Fern
Venushaar
Adiantum raddianum
Also known as Adiantum cuneatum
“I am gorgeous, but I do not forgive drying out.”
pet safechild safebathroom planthumidity lovingterrarium plant
- Light
- Medium light
- Water
- Keep lightly moist
- Pet safety
- Pet safe
- This month
- Finish the strongest growth flush with one more light feed. Review support or pruning needs for the bushy shape before tired leaves hide pests Cue: Fine black wiry stems carrying many delicate fan-shape.
August care tip
Finish the strongest growth flush with one more light feed. Review support or pruning needs for the bushy shape before tired leaves hide pests Cue: Fine black wiry stems carrying many delicate fan-shape.
Quick Care Summary
- Light
- Medium light
- Water
- Keep lightly moist
- Placement
- Best in a humid bathroom, terrarium-like shelf or warm plant cabinet.
- Temperature
- 16–26°C
- Humidity
- high
Free printable Plant Passport card
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Plant Passport
Maidenhair Fern
LightBright
Water7-10d
Botanical stake card
- Format
- 150 x 25mm
- Best for
- Slim plant stakes and gift pots
Use the card section above when you are ready to download or add a printed card.
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View holders →Detailed Care Guide
Watering Method
Water carefully and keep the mix evenly lightly moist while still letting air reach the roots; drain fully every time.
Soil Mix
Open fern mix with bark, coco and perlite; mounted ferns use sphagnum or bark slabs.
Repotting
Repot in spring only when roots fill the pot or the medium has broken down.
Pruning
Remove dead or damaged leaves cleanly; avoid cutting healthy fern shield fronds.
Pot Preference
Use drainage and a pot or mount that stays evenly moist without becoming sour.
Fertilizing
Feed lightly from April to September; flowering or fast foliage plants can use monthly half-strength fertilizer.
Draft Sensitivity
Keep above 16 C and away from cold draughts.
Sources consulted
- powo.science.kew.org
- www.aspca.org
- www.rhs.org.uk
Room Placement
Window Direction
East, north-east or filtered west light.
Best Room
humid bathroom, terrarium-like shelf or warm plant cabinet
Monthly Care Calendar
Aug (now)
Finish the strongest growth flush with one more light feed. Review support or pruning needs for the bushy shape before tired leaves hide pests Cue: Fine black wiry stems carrying many delicate fan-shape.
Sep
Start reducing fertilizer and stretch watering as nights cool. Move Maidenhair Fern closer to bright filtered light before autumn light drops Cue: Fine black wiry stems carrying many delicate fan-shape.
Oct
Stop feeding and prepare for heating season. Set up humidity before edges crisp Cue: Fine black wiry stems carrying many delicate fan-shape.
Nov
Winter risk check: test soil before watering, inspect fine black wiry stems carrying many delicate fan-shaped leaflets, and keep the pot draining freely while growth slows Cue: Fine black wiry stems carrying many delicate fan-shape.
Watering Schedule
- Summer
- Every 4 days
- Winter
- Every 8 days
Feel the medium and keep the mix evenly lightly moist while still letting air reach the roots.
Common Problems
Propagation
divisionsporeshardspring
Propagate only from healthy mature plants in warm spring conditions; keep divisions humid and shaded until settled.
Pests & Diseases
Spider mites
Early signs
Fine webbing and pale speckling during dry indoor weather.
Treatment
Rinse gently, raise humidity and repeat treatment weekly.
Root or crown rot
Early signs
Soft bases, sour smell or collapsing new growth.
Treatment
Improve airflow, remove rot and avoid water sitting in the crown.
Buying Tips
Choose Maidenhair Fern with clean new growth, no crispy crown and no sour smell from the pot.
Frequently Asked Questions
Fun Facts
Maidenhair Fern shows quickly when humidity or watering drifts, making it a useful signal plant in a plant group.
Origin & Natural Habitat
Warm humid forest habitat with filtered light and organic, airy root zones.
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