How to Grow Blunt Leaf Greenhood
Blunt Leaf Greenhood
Pterostylis revoluta
flowerPterostylis revoluta is a terrestrial orchid native to southeastern Australia, featuring distinctive hooded flowers with a prominent labellum that attracts and traps insects for pollination. This small deciduous orchid produces a rosette of basal leaves and typically blooms in spring with greenish flowers marked with darker veining. It is prized by orchid enthusiasts and native plant collectors for its unique pollination mechanism and delicate beauty.
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Example Blunt Leaf Greenhood timeline · Pittsburgh, PA (Zone 6b)
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Plant Blunt Leaf 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 Blunt Leaf Greenhood blooms
Mid-to-late summerBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Zones 9b-11a; best suited to cool to warm temperate climates with mild winters
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Get my Blunt Leaf Greenhood timeline →Growth Stages
Dormancy
June-August (Southern Hemisphere) or December-February (Northern Hemisphere)Plant enters dormancy during hot summer months; leaves die back and tuber remains quiescent underground
Reduce watering significantly; keep soil barely moist; store pots in cool location if indoors; allow plant to rest without fertilization
Emergence & Growth
August-October (Southern Hemisphere)New leaves begin to emerge in autumn as temperatures cool; rosette of lanceolate basal leaves develops
Begin regular watering as growth resumes; increase moisture and humidity; apply dilute orchid fertilizer monthly; maintain cool temperatures (60-70°F ideal)
Flowering
September-November (Southern Hemisphere)Inflorescence emerges from center of leaf rosette; distinctive hooded green flowers with darker stripes develop and open sequentially
Maintain consistent moisture without waterlogging; keep humidity moderate; avoid disturbing flowers during blooming; provide cool nighttime temperatures to prolong bloom; refrain from fertilizing during flowering
Post-Flowering & Decline
December-May (Southern Hemisphere)After flowering, foliage gradually yellows and deteriorates; plant begins transition to dormancy
Continue light watering as foliage fades; reduce fertilization; allow natural senescence; gradually decrease water as leaves die back completely
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity; spray foliage with water; use horticultural oil or miticide if severe; ensure good air circulation
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Remove by hand or with cotton swab dipped in rubbing alcohol; apply insecticidal soap; treat with neem oil if infestation persists
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Remove manually; apply horticultural oil during dormancy; treat with insecticidal soap in growing season
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and
Remove by hand; use copper tape around pots; apply organic slug pellets; maintain dry foliage and reduce nighttime moisture
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and
(Pythium, Phytophthora species)
Ensure excellent drainage; avoid waterlogging; improve air circulation; remove affected portions; use fungicidal drench if necessary; repot in fresh orchid mix if root rot occurs
Uses
Pollinator Attraction
WildlifePterostylis revoluta employs a sophisticated pollination mechanism where the mobile labellum acts as a trap, decoying insects and forcing them to exit through anther-stigma channels, transferring pollen in the process. This fascinating mutualistic system makes it valuable for supporting native Australian insect populations and demonstrating orchid-insect coevolution. [source]
Ornamental & Horticulture
CraftPterostylis revoluta is prized by orchid collectors and native plant enthusiasts for its unique hooded flowers and challenging cultivation requirements. Growing this species appeals to serious horticulturists interested in specialized orchid husbandry and conservation of native Australian flora. [source]
Indoor Container Growing
HouseholdWith proper conditions, this orchid thrives in containers placed in cool, shaded indoor locations or cool greenhouse environments. It serves as an educational specimen demonstrating orchid dormancy, specialized pollination, and the requirements for growing tender tropical and subtropical plants indoors. [source]
Harvest Tips
Not harvested for consumption. For seed collection: allow flowers to be pollinated naturally by insects or hand-pollinate if desired; collect seed pods once they mature and turn brown; sow seeds on suitable orchid medium; seeds require symbiotic mycorrhizal fungi to germinate successfully. For tuber division: divide tubers during dormancy (late summer) every 3-4 years; ensure each division has viable growing point.
Fun Facts
- 🌱 Pterostylis revoluta has a remarkable pollination strategy where the plant mimics female insects or produces volatile compounds that attract male insects, which then become trapped within the flower hood and must exit through the reproductive column, ensuring pollen transfer.
- 🌱 The genus Pterostylis comprises approximately 100+ species, mostly endemic to Australia, Tasmania, and parts of New Zealand, making Australia's orchid diversity exceptionally high relative to its size.
- 🌱 This orchid is deciduous and truly dormant, requiring a pronounced cool, dry rest period during summer months; without this dormancy break, plants rarely flower and may decline over time.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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