Key Features
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Rare Australian Native: Orange Thorn (Citriobatus pauciflorus, also known as Pittosporum multiflorum) is an evergreen shrub native to eastern Australia.
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Fruit Characteristics: Produces small, rounded fruits that turn bright orange as they mature.
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Plant Characteristics: Develops into a dense, thorny shrub with glossy green foliage and small, pale flowers.
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Garden Uses: Suitable for ornamental landscapes, native plant collections, wildlife gardens, and natural hedges.
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Special Feature: Its distinctive orange fruits and thorny branches create an attractive display in suitable gardens.
Growing Benefits
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Colorful Garden Display: Enjoy bright orange fruits that add seasonal color to ornamental landscapes.
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Evergreen Foliage: Maintain attractive green foliage throughout the year in suitable climates.
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Wildlife Garden Interest: Dense branches provide shelter, while flowers and fruits may attract local wildlife.
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Natural Garden Borders: Thorny stems and dense growth make this species suitable for informal hedges.
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Botanical Collection: Cultivate an unusual Australian native shrub with distinctive ornamental characteristics.
Seed Specifications
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Common Name: Orange Thorn
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Botanical Name: Pittosporum multiflorum (synonym: Citriobatus pauciflorus)
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Plant Type: Evergreen perennial thorny shrub
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Colors: Bright orange fruits, pale flowers, glossy green foliage
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Height: Approximately three to ten feet, depending on growing conditions
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Sunlight: Partial shade to full shade; tolerates some sunlight
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Soil: Well-drained sandy, loamy, or clay-based soil
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Water: Moderate watering during establishment; established plants tolerate occasional dry periods
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Germination Time: Variable; a reliable species-specific timeframe is not established
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Sowing Depth: Approximately one-quarter inch as a general propagation guideline
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Spacing: Approximately four to six feet between plants, depending on intended landscape use
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Growing Zones: Suitable for mild temperate and subtropical climates; exact USDA hardiness zones are not well established
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Flowering/Maturity: Small flowers generally appear during spring and summer, followed by orange fruits
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Uses: Ornamental landscaping, native gardens, wildlife plantings, natural hedges, and botanical collections
Growing Tips
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Sow Fresh Seeds: Plant freshly cleaned seeds whenever possible to improve the chances of successful establishment.
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Maintain Soil Moisture: Keep the growing medium evenly moist without allowing waterlogging.
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Provide Filtered Sunlight: Grow seedlings in bright, sheltered conditions before gradually introducing them to outdoor environments.
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Allow Growing Space: Provide adequate room for spreading branches and avoid planting close to narrow walkways.
Seed Storage
Store Orange Thorn seeds in a clean, labeled container in a cool, dry location away from direct sunlight and excessive heat. Remove remaining fruit pulp before storage to reduce the risk of mold. Because long-term seed viability information for this species is limited, fresh sowing is recommended whenever possible.
Unique Facts About Seeds
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Not a Citrus Plant: Despite its orange-colored fruits, Orange Thorn belongs to the Pittosporaceae family rather than the citrus family.
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Australian Origin: The species occurs naturally in parts of eastern Australia, including Queensland and New South Wales.
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Botanical Name History: Citriobatus pauciflorus is an older botanical name now generally treated as a synonym of Pittosporum multiflorum.
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Distinctive Growth Habit: Its thorny branches and colorful fruits make it an unusual addition to native and specialty shrub collections.



