How to Grow Reflexed Greenhood
Reflexed Greenhood
Pterostylis reflexa
flowerPterostylis reflexa is a small terrestrial orchid native to southeastern Australia, characterized by its distinctive hood-like dorsal sepal that curves backward and its delicate green flowers with purple markings. This deciduous orchid blooms in spring and requires specific cultural conditions to thrive, making it a challenging but rewarding species for orchid enthusiasts. It grows from underground tubers and is primarily found in cool, moist, shaded forest environments.
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Example Reflexed Greenhood timeline · Pittsburgh, PA (Zone 6b)
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Plant Reflexed Greenhood
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Reflexed Greenhood blooms
Mid-to-late summerBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Reflexed Greenhood dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 8b-10a; prefers cool to intermediate temperatures year-round
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Dormancy
6-8 weeksUnderground tuber lies dormant in dry conditions; no visible growth above ground
Keep medium dry during summer months (June-August in Northern Hemisphere); store in cool, dry location; check tubers monthly for rot or pest damage
Sprouting
2-3 weeksNew shoots emerge from tuber as temperatures cool in autumn; first leaves appear green and unfurling
Begin watering as new growth appears; increase humidity gradually; move to bright, indirect light; resume fertilizing at half strength
Vegetative Growth
8-12 weeksPlant develops 2-4 narrow, grass-like leaves forming a rosette; tuber develops roots; may produce small tuberoid offsets
Maintain consistent moisture; provide cool temperatures (50-65°F ideal); ensure excellent air circulation; apply dilute orchid fertilizer every 2-3 weeks
Flowering
3-4 weeksInflorescence emerges with 1-3 small hooded flowers; petals range from green to deep green with purple-red markings; hood reflexes backward
Maintain humidity and moisture; provide cooler nighttime temperatures (5-10°F drop); avoid disturbance; do not fertilize during flowering
Post-Flowering & Seed Set
4-6 weeksFlowers fade and develop seedpods if pollinated; leaves continue photosynthesizing; tuber develops reserves for next season
Continue regular watering and care; allow foliage to yellow naturally before withholding water; do not remove leaves prematurely; begin drying out in late spring
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity; spray with water; use neem oil or insecticidal soap; ensure good air circulation
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Spray with dilute insecticidal soap; use neem oil; remove affected leaves; monitor new growth
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Remove manually with soft brush; apply horticultural oil; treat with systemic insecticide if severe
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Improve drainage and air circulation; reduce watering frequency; apply fungicide; remove affected tubers
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and
Hand-pick; reduce moisture temporarily; apply copper-based or iron phosphate slug baits; remove hiding spots
Uses
Garden and Container Display
OrnamentalPterostylis reflexa is valued by orchid collectors for its unique hooded flowers and compact growth habit. It adds interest to shade gardens and specialized orchid collections, though it requires dedicated care and cool conditions. [source]
Insect Pollination
WildlifeIn its native habitat, this orchid attracts native Australian insects through its distinctive hooded flower shape and movements triggered by insect contact (pseudocopulation). Growing this species supports native pollinator conservation efforts. [source]
Botanical Collection and Study
CraftThis rare orchid is of significant botanical and horticultural interest for researchers and serious collectors studying Australian native flora, orchid ecology, and mycorrhizal associations. It demonstrates specialized adaptation to cool forest environments. [source]
Harvest Tips
Pterostylis reflexa is an orchid grown for ornamental flowers, not harvested for material. Allow flowers to bloom naturally in spring (September-November in Australia). If hand-pollination is desired, use a fine brush to transfer pollen between flowers. Collect seed pods only after they fully mature and begin to naturally open (late spring). Seeds require fungal symbiosis (mycorrhizal association) to germinate and are extremely difficult to propagate without laboratory conditions.
Fun Facts
- 🌱 Pterostylis reflexa exhibits pseudocopulation—the flower's shape and movements attract male insects that attempt to mate with it, inadvertently transferring pollen in the process.
- 🌱 This orchid requires a mycorrhizal fungal partner (specific fungal association) to germinate from seed and establish in nature; seeds cannot germinate without this fungal symbiosis.
- 🌱 The common name 'Greenhood' derives from the distinctive hood-like dorsal sepal that curves backward (reflexes), creating a protective cover over the flower's reproductive structures.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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