The Hardy Orange Tree (Poncirus trifoliata), also known as Trifoliate Orange, is a unique, cold-resistant citrus relative prized for its fragrant flowers, spiny branches, and ornamental golden-orange fruits. Grown from non-GMO seeds, this small deciduous tree thrives in cooler climates where traditional citrus trees cannot survive. It’s perfect for use as a decorative hedge, bonsai, or cold-hardy fruiting tree.
Cold-Hardy Citrus: Survives temperatures as low as -10°F (-23°C).
Non-GMO & Natural: Free from chemicals and genetic modification.
Fragrant White Blossoms: Highly aromatic flowers attract pollinators.
Unique Ornamental Fruit: Produces small, round, orange-colored fruits.
Low Maintenance: Drought-tolerant once established.
Versatile Use: Excellent for hedges, container growing, and bonsai.
Scientific Name: Poncirus trifoliata
Common Name (U.S.): Hardy Orange / Trifoliate Orange
Seed Type: Non-GMO, Open-Pollinated
Plant Type: Deciduous Shrub / Small Tree
Mature Height: 8–15 feet
Spread: 6–12 feet
Fruit Type: Small, round, orange-yellow citrus-like fruit
Fruit Flavor: Tart and aromatic (best used for marmalades or ornamental use)
Sunlight Requirement: Full Sun
Soil Type: Well-drained loamy or sandy soil
Soil pH: 6.0–7.5
Watering Needs: Low to moderate; drought-tolerant after establishment
Temperature Range: -10°F to 90°F (-23°C–32°C)
USDA Hardiness Zones: 5–9
Days to Germination: 21–35 days
Days to Maturity: 3–5 years to fruiting
Spacing: 8–10 feet apart
Pollination: Self-pollinating
Organic Status: Non-GMO
Special Traits: Cold-hardy, fragrant, ornamental, pollinator-friendly
Seed Preparation: Soak seeds in warm water for 24 hours before planting.
Sowing Depth: Plant ½ inch deep in well-draining seed-starting soil.
Germination Temperature: Maintain 70°F–85°F (21°C–29°C).
Light: Provide full sunlight or grow under a bright indoor light.
Transplanting: Move seedlings outdoors once frost danger has passed.
Soil Preparation: Mix organic compost for improved drainage.
Watering: Keep soil moist but not waterlogged during early growth.
Pruning: Prune for shape and air circulation after each growing season.
Fertilizing: Feed with balanced citrus fertilizer twice yearly.
Harvesting: Pick fruits in late fall when fully yellow or orange.
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