5 Trifoliate Orange Seeds – Cold Hardy Citrus for Rootstock or Ornamental Hedge

Trifoliate orange (Poncirus trifoliata) is a cold-hardy citrus relative prized for its ability to thrive in cooler climates where other citrus cannot. It produces fragrant white flowers in spring, followed by small, fuzzy, orange-like fruits. The dense, thorny branches make it an excellent choice for an impenetrable ornamental hedge or as a rootstock for grafting less hardy citrus varieties.

This listing offers 5 seeds of trifoliate orange, allowing you to grow your own cold-hardy citrus tree or create a unique hedge. Whether you're a gardener looking to push the boundaries of citrus growing or a hobbyist interested in grafting, these seeds provide an exciting opportunity.

Plant Features

• Cold hardy to USDA zone 5, surviving temperatures down to -20°F (-29°C) when established
• Fragrant white blossoms in spring attract pollinators
• Produces small, seedy fruits often used for marmalade or juice
• Dense, thorny growth habit makes it ideal for security hedges
• Widely used as a rootstock for other citrus varieties

Growing Information

• Botanical Name: Poncirus trifoliata (syn. Citrus trifoliata)
• Plant Type: Deciduous shrub or small tree
• Sunlight: Full sun to partial shade
• Soil: Well-drained, slightly acidic to neutral soil
• Water Requirements: Moderate; drought tolerant once established
• Growth Habit: Upright, spreading, with dense thorny branches
• USDA Hardiness Zones: 5-9
• Bloom Season: Spring
• Mature Height: 8-20 feet (2.4-6 m) if unpruned
• Germination Requirements: Cold stratification for 30-60 days recommended; sow seeds 1/4 inch deep
• Spacing: 4-6 feet apart for hedges; 10-15 feet for specimen trees

Planting & Care

To grow trifoliate orange from seed, start by cold stratifying the seeds: place them in a moist paper towel inside a sealed plastic bag and refrigerate for 30-60 days. After stratification, sow seeds about 1/4 inch deep in a well-draining seed-starting mix. Keep the soil consistently moist but not waterlogged, and maintain a temperature around 70-80°F (21-27°C). Germination can be erratic, taking anywhere from a few weeks to several months.

Once seedlings have developed several true leaves, transplant them into individual pots and grow them on in a bright, sunny location. When they are large enough, they can be planted outdoors in a sheltered spot. Trifoliate orange is adaptable but prefers full sun and well-drained soil. Water regularly during the first year to help establish a deep root system. Prune as needed to shape or maintain hedge size; be mindful of the sharp thorns when handling.

What's Included

5 Trifoliate Orange seeds.