Theta Hazelnut Tree
Theta Hazelnut Tree, a compact and attractive nut trees are ideal for your yard and landscape. Actively growing virtually all year, Filberts feature striking, long, yellow, male catkins that form in late fall and delicious and nutritious nuts that are ready to harvest in September. We love roasting filberts as a topping for ice cream, in cereal, and for baking.
This recent Oregon State University introduction features very flavorful, medium-size nuts and immunity to Filbert Blight. Plant Theta with Jefferson or Eta for cross-pollination.
Latin Name: Corylus avellana
Site and Soil: Filberts like 1/2 day to full sun and well-drained soil.
Pollination Requirements: Plant with Jefferson or Eta for cross-pollination.
Hardiness:Filbert trees are hardy to minus 25° F. Flowers are hardy to approx. minus 15° F.
Bearing Age: 2-3 years after planting
Size at Maturity: 8-12 ft. in height
Bloom Time: Winter and spring
Ripening Time: September
Yield: 20+ lbs.
Pests & Diseases: Theta is immune to Eastern Filbert Blight. Filbert worm can damage nuts of all Filbert varieties.
USDA Zone: 5
Sunset Western Zone: 2-7
Sunset Northeast Zone: 32, 34-43