UCB-1 Pistachio Rootstock

UCB-1 Pistachio Rootstock

A hybrid pistachio rootstock introduced by UC Berkeley, UCB-1 Pistachio Rootstock is now the most widely used pistachio rootstock across California. Pistachio trees grafted onto this rootstock show superior disease resistance, cold tolerance and vigor.

*These plants are intended for use as rootstock only and will not produce desirable nuts on their own*

Learn more about rootstock and grafting through the guides below and explore our available grafting tools HERE!
Rootstock Reference Guide
Fruit Tree Grafting Guide

Sign up to be notified when we announce our annual scion sale HERE!

Latin Name: Pistacia atlantica x P. integerrima 
Site and Soil: Pistachio trees like full sun and well-drained soil.
Pollination Requirements: A male and female tree are required for nut production.
Hardiness: 0F.
Bearing Age: Trees grafted onto UCB-1 usually start bearing 3-5 years after planting
Size at Maturity: 12-18 feet in height
Bloom Time: April-May
Ripening Time: late fall
Yield: 10-20 lbs.
Pests & Diseases: Our Pistachio trees have not been bothered by pests or diseases.
USDA Zone: 7
Sunset Western Zone: 7-12, 14, 15, 18-21
Sunset Northeast Zone: 31-32