US Plant Patent PP13687
Sierra Rose
Interspecific tree name ‘Sierra Rose’
PUBLIC DOMAIN
Patent expired April 11, 2022. This plant is in the public domain — anyone may propagate and sell it.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

The record
- Patent number
- PP13687
- Filed
- April 11, 2002
- Granted
- March 25, 2003
- Expires
- April 11, 2022
- Inventor
- ZAIGER GARY NEIL; GARDNER LEITH MARIE; ZAIGER GRANT GENE
Abstract
A new and distinct variety of interspecific tree [(Plum×Plumcot)×((Apricot×Plumcot)×apricot)]. The following features of the tree and its fruit are characterized with the tree budded on ‘Citation’ Rootstock (U.S. Plant Pat. No. 5,112), grown on Handford sandy loam soil with Storie Index rating 95, in USDA Hardiness Zone 9, near Modesto, Calif., with standard commercial fruit growing practices, such as pruning, thinning, spraying, irrigation and fertilization. Its novelty consists of the following combination of desirable features: 1. Fruit with excellent eating quality. 2. Vigorous, upright growth. 3. Fruit with a high degree of attractive brownish violet color. 4. Fruit having firm flesh with good handling and storage quality. 5. Fruit with high Brix, (soluble solids), average 16°.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
We claim: 1. A new and distinct variety of interspecific tree, substantially as illustrated and described, characterized by its large size, upright growth and a productive and regular bearer of large, yellow flesh, clingstone fruit with excellent eating quality; the fruit is further characterized by having firm flesh with good storage and shipping quality and in comparison to the ‘Friar’ Plum (non-patented), the new fruit is more round in shape and is approximately 20 days later in maturity.
Read the full patent: US Plant Patent PP13687 in full — the complete specification, every figure, and the file history.