US Plant Patent PP13505
Royal Treat
Interspecific tree named ‘Royal Treat’
PUBLIC DOMAIN
Patent expired February 7, 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
- PP13505
- Filed
- February 7, 2002
- Granted
- January 21, 2003
- Expires
- February 7, 2022
- Inventor
- ZAIGER GARY NEIL; GARDNER LEITH MARIE; ZAIGER GRANT GENE
Abstract
A new and distinct variety of interspecific tree (Plum×Plumcot). 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 very good flavor and eating quality. 2. Fruit maturing in the early maturity season. 3. Fruit with an attractive dark magenta skin color. 4. Vigorous, upright growth habit. 5. Fruit with a good balance between sugar and acid, having soluble solids of 14.8° Brix.
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, vigorous, upright growth and being a productive and regular bearer of medium size, yellow flesh, clingstone fruit with very good flavor and eating quality. The fruit is further characterized by ripening in the early maturing season and, in comparison to the ‘Laroda’ Plum (non-patented), the fruit is approximately 30 days earlier in maturity.
Read the full patent: US Plant Patent PP13505 in full — the complete specification, every figure, and the file history.