US Plant Patent PP15225
P30-135
Peach and nectarine rootstock named ‘P30-135’
PUBLIC DOMAIN
Patent expired June 16, 2023. This plant is in the public domain — anyone may propagate and sell it.
Twenty years from the filing date would end on May 15, 2023. This patent earned 32 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP15225
- Filed
- May 15, 2003
- Granted
- October 12, 2004
- Expires
- June 16, 2023
- Assignee
- UNIV CALIFORNIA, US AGRICULTURE
- Inventor
- DEJONG THEODORE; RAMMING DAVID; JOHNSON R SCOTT; DOYLE JAMES
Abstract
The 'P30-135' rootstock is an interspecific hybrid rootstock Prunus salicianaxP. persica, developed for use as a clonal commercial rootstock under peach and nectarine cultivars. Propagation of this stock has been successfully accomplished from hardwood cuttings. The 'P30-135' has the characteristic of imparting a substantial degree of vigor control to the scion cultivar that has been propagated upon it. This type of growth-controlling rootstock allows for the reduction of the height of orchard trees without compromising the quality of the fruit borne upon the tree. Size reduction of commercial orchard trees increases the efficiency of various cultural operations such as pruning, thinning and harvesting by reducing the need for workers in the field to carry and climb tall ladders.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
What is claimed is: 1. A new and distinct peach and nectarine rootstock plant, ‘P30-135’, as herein described and illustrated.
Read the full patent: US Plant Patent PP15225 in full — the complete specification, every figure, and the file history.