Giant Hay-scented Fern
macrothelypteris torresiana
Also known as: ["Torresian Fern","Giant Hay-scented Fern"]
Overview
A large, deciduous fern with delicate, lacy fronds that emit a hay-like scent when crushed.
Benefits & Perks
["shade tolerant","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Tracheophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Family: | Thelypteridaceae |
| Genus: | Macrothelypteris |
| Botanical Name: | Macrothelypteris torresiana |
Plant Characteristics
Basic Information
- Category: Leaf Plants
- Suitable Location: shaded garden bed or container in a humid environment
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"10–30°C"}
- Hardiness: {"zones":"8–11"}
- Misting: every 2–3 days to maintain moderate humidity
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, rich in organic matter; peat-based mix with perlite or sand.
Maintenance Level
- Maintenance Level: low
- Toughness Level: moderate
- Pruning Frequency: As needed, typically every few months or after flowering.
- Pruning Intensity: Light to moderate; avoid removing more than 20% of foliage at once.
Care Details
Ideal Sunlight Coverage:
Bright indirect light for 6–8 hours daily; tolerates partial shade, especially in hot climates.
Sunlight Tolerance Tips:
Acclimate gradually to intense light; protect from direct midday sun to prevent scorching; adjust placement based on indoor/outdoor conditions.
Care Requirements
Care Difficulty
easymoderate
Sunlight
partial shade to dappled light
Rotate plant for even growth; use sheer curtains to filter harsh light; avoid sudden light changes.
Watering
every 7–10 days, allowing soil to dry slightly between waterings
Water thoroughly until it drains from the bottom; allow soil to dry slightly between waterings; avoid overwatering.
Soil
moist, well-draining, humus-rich soil
pH: Slightly acidic to neutral (pH 5.5–7.0).
Use a mix with good water retention but no standing water; avoid heavy clay soils.
Temperature
Prefers 60–75°F (15–24°C); tolerates mild fluctuations but avoids extremes.
Avoid placing near drafty windows; maintain stable temperatures; monitor for stress signs.
Fertilizing
every 4–6 weeks during growing season (spring–summer)
Fertilize only when actively growing; flush soil occasionally to prevent salt buildup; avoid over-fertilizing.
Propagation
Methods
Spores or division of rhizomes.
Step-by-Step Propagation Guide
- Collect spores or divide rhizomes.
- Prepare medium.
- Plant spores or rhizomes.
- Maintain humidity.
- Transplant when rooted.
Best Time: Spring or early summer when the plant is actively growing.
Environment
High humidity (70–90%), warm temperatures (70–75°F), indirect light.
Medium
Spores: sterile sphagnum moss or peat mix; division: well-draining soil mix.
Hormone
Not required for spores; optional for rhizome division.
Timeline
Spores: 1–3 months to germinate; rhizome division: immediate establishment.
Tools Needed
Spore sieve, sterile knife, humidity dome, pots.
Quick Tips
Use a fine sieve for spore sowing; keep rhizome divisions moist; label new plants.
Pruning & Repotting
Pruning Guide
Method
Cut fronds at the base with clean, sharp tools; remove yellowing or brown fronds.
Pruning Plan
Remove dead or damaged fronds to maintain appearance and health; occasional shaping to control size.
Tools
Pruning shears, sterilized knife.
Checklist
Check for dead/damaged fronds; sterilize tools; prune carefully; dispose of clippings.
Repotting Guide
Best Season
Spring, before the active growing season begins.
Pot Size
One size larger pot; ensure good drainage.
Method
Remove plant gently; trim roots if necessary; place in new pot with fresh soil; water lightly.
Suggestions
Repot every 2–3 years or when roots fill the pot; beneficial for growth and health.
Checklist
Check root bound status; prepare new pot; use fresh soil; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture; water thoroughly; ensure drainage; adjust for season.
How to Apply Water Properly
Water directly at the root zone, ensuring even moisture distribution; water early in the day to minimize fungal issues; ensure excess water drains away.
Watering Schedule Tips
Water deeply when the top 1–2 inches of soil are dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or sand for drainage; incorporate compost for fertility; ensure aeration.
Temperature Stress Management
Signs of Temperature Issues
Wilting, yellowing leaves, or stunted growth in cold; leaf scorch or browning in excessive heat.
Cold Stress
Slows growth, may cause root damage, and increases susceptibility to disease.
Solution: Move to a warmer location; insulate pots; avoid cold drafts.
Hot Stress
Leaves may curl, dry out, or drop; growth may cease.
Solution: Provide shade; increase humidity; water more frequently but avoid waterlogging.
Fertilizing Guide
Fertilizing Checklist
Check growth phase; dilute fertilizer; apply to moist soil; rinse between feedings.
Fertilizing Method
Use balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season (spring/summer); cease in fall/winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicMacrothelypteris torresiana is not known to be toxic to cats. It poses no significant health risks if ingested or handled.
⚡ Toxic If:
None
Dogs
Non-toxicMacrothelypteris torresiana is not known to be toxic to dogs. It poses no significant health risks if ingested or handled.
⚡ Toxic If:
None
Humans
Non-toxicMacrothelypteris torresiana is not known to exhibit toxic properties to humans. It is generally considered safe for handling and consumption.
⚡ Toxic If:
None
Frequently Asked Questions
Q: Does this fern require direct sunlight?
A: No, it thrives in partial to full shade.
Q: Is it safe for pets?
A: Yes, it is non-toxic to dogs and cats.
Q: How often should it be watered?
A: Keep the soil consistently moist, but not waterlogged.
Quick Reference
| Family: | Thelypteridaceae |
| Care: | easy |
| Light: | partial shade to dappled light |
| Water: | every 7–10 days, allowing so |
Get Expert Care Tips
Download the Plantious app for personalized care reminders and plant identification!
Google Play App Store
