nut variety in zone 7a
Jefferson hazelnut in zone 7a
Jefferson · Corylus species and hybrids
- Zone
- 7a 0°F to 5°F
- Growing season
- 210 days
- Chill needed
- 800 to 1500 below 45°F
- Days to harvest
- 100 to 130
The verdict
Detailed guidance for this section is being prepared. Check back soon.
About Jefferson
Sweet, rich, buttery; fresh, baking, confections, butter. Large round nuts. The Oregon State release that resists Eastern Filbert Blight, the standard for new commercial plantings. Pair with Eta or Theta as pollinizer.
Critical timing for zone 7a
Detailed guidance for this section is being prepared. Check back soon.
Common challenges in zone 7a
- ▸ Cedar-apple rust
- ▸ Brown rot
- ▸ Fire blight
- ▸ High humidity disease pressure
Disease resistance
Documented resistance for Jefferson; useful for low-spray management in zone 7a.
- eastern-filbert-blight
Modified care for zone 7a
Detailed guidance for this section is being prepared. Check back soon.
Jefferson in adjacent zones
Other hazelnut varieties for zone 7a
- American Hazelnut
Sweet, mild, small nuts; fresh, baking. Native Corylus americana, naturally EFB-tolerant. Multi-stem shrub for…
- Theta
Sweet, rich, large nuts with easy crack-out; baking and fresh. OSU pollinizer for Jefferson, EFB-resistant, pr…
- Yamhill
Sweet, rich flavor, smaller round nuts; fresh and processing. Compact OSU release with strong EFB resistance, …
Frequently asked questions
- Will Jefferson hazelnut grow in zone 7a?
Yes. Jefferson is recommended for USDA zones 5a through 8a, which includes zone 7a.
- Are there enough chill hours in zone 7a?
Hazelnut needs 800 to 1500 chill hours. Zone 7a typically meets this range; check local microclimate against historical chill totals to confirm.
- Does Jefferson resist regional diseases in zone 7a?
Jefferson carries documented resistance to eastern-filbert-blight, which can simplify low-spray management in zone 7a.
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Image: "Hazelnuts", by Fir0002 at English Wikipedia, via Wikimedia Commons, licensed under CC-BY Source.
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