
Common Name: Northern Prize Walnut
Juglans regia ‘Northern Prize’ Stark® Northern Prize™ Walnut / Northern Prize English Walnut / Northern Prize Persian Walnut Juglans regia ‘Northern Prize’ is a cold-hardy English/Persian walnut selected for northern climates. It is a deciduous nut tree with compound green foliage, an upright rounded canopy, and edible walnuts that ripen in fall. Iowa State describes Stark Northern Prize™ as a cold-resistant Persian/Carpathian walnut selected from open-pollinated seedlings planted at the Iowa State Northeast Research and Demonstration Farm. Type: Deciduous nut tree Mature Size: 20–30 ft. wide × 20–30 ft. tall USDA Zones: 4a–8b, based on its reported cold hardiness to about -32°F Form: Medium-sized, upright to rounded shade / nut tree Light: Full sun Soil / Water: Deep, fertile, well-drained soil; moderate water, especially during establishment and nut development Bloom Time / Length: Spring; male catkins and small female flowers, wind-pollinated and not showy Wildlife: Nuts may attract squirrels, chipmunks, deer, and other wildlife; flowers are wind-pollinated rather than showy for bees or butterflies. Features & Landscape Uses: Good for northern edible landscapes, home orchards, nut plantings, farms, and large sunny yards where a smaller, cold-hardy English walnut is desired. Stark Bro’s describes Northern Prize as grafted, cold hardy to -32°F, bearing in about 5–6 years, growing 20–30 ft. tall, and ripening in late September. Pollination: Northern Prize is listed as self-pollinating, so one tree can produce nuts. However, crops are usually heavier with a compatible English walnut nearby; Stark lists Stark® Champion™ English Walnut or Lake English Walnut as pollination partners. Care: Plant in full sun with deep, well-drained soil and good air movement. Water regularly while young and during dry periods, especially while nuts are sizing. Prune in late winter to remove damaged, crossing, or poorly placed limbs and to develop strong structure. Watch for walnut anthracnose, bacterial blight, cankers, walnut husk fly, caterpillars, and root problems in poorly drained soil. Like other walnuts, English walnut can produce juglone, so avoid planting sensitive plants too close to the root zone.
| Plant Type: | Nut Tree |
| Width: | 20-30' |
| Height: | 20-30' |
| Fragrant: | No |
| Growth Rate | Fast |
| Zone: | 4 - 8 |
| Deer Resistant: | No |
| Salt Tolerant: | No |
| Drought Tolerant: | No |
| Attract: | Bees, Squirrels, Birds |
| Exposure: | Full Sun |
| Bloom Time: | Spring |
| Landscape/Use: | Provide Shade, Nuts |
| Shape: | Rounded, Upright |
| Soil Type | Rich, Moist well-drained |
| Leaf Color: | Green |
| Fall Color: | Green |