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Hazelnut Rootstocks Theta
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Theta

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'Theta', tested as OSU 1001.008, resulted from a cross of OSU 561.184 × 'Delta'. The controlled crosses were made by S.A. Mehlenbacher and D.C. Smith in 1999.

Pricing | Inventory

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'Theta', tested as OSU 1001.008, resulted from a cross of OSU 561.184 × 'Delta'. The controlled crosses were made by S.A. Mehlenbacher and D.C. Smith in 1999.

Pricing | Inventory

'Theta', tested as OSU 1001.008, resulted from a cross of OSU 561.184 × 'Delta'. The controlled crosses were made by S.A. Mehlenbacher and D.C. Smith in 1999.

Pricing | Inventory

  • 'Theta', tested as OSU 1001.008, resulted from a cross of OSU 561.184 × 'Delta'. The controlled crosses were made by S.A. Mehlenbacher and D.C. Smith in 1999.

  • 'Theta' will produce trees that are 100% of Barcelona. 'Theta' trees have a more upright growth habit.

  • 'Theta' has a high resistance to Eastern Filbert blight.

  • 'Theta' roots abundantly from layer beds similar to 'Jefferson'. Rooted layers of 'Eta' are moderately vigorous, whereas those of 'Theta' are vigorous and similar in height and caliper to those of 'Barcelona'. It can also be produced from TC, Soft Wood Cuttings, and Suckering tie-off.

  • 'Theta' is not promising as a main crop variety because of small nut size and late maturity. 'Theta' provides excellent coverage late in the flowering season when little pollen is available from other pollenizers and cultivars. 'Theta' is a suitable pollinizer for 'Jefferson', 'Clark', 'Ennis', and 'Casina'.

Contact for Orders

TRECO®-Oregon Rootstock & Tree Co. Inc.

Copyright © 2024 TRECO®-Oregon Rootstock & Tree Co. Inc.
P.O. Box 98
Woodburn, OR 97071

p: 1.800.871.5141
f: 1.503.634.2344

Design: Cat Frink | Photography: Jon Meyers

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