US Plant Patent PP12783
Windsor
Blueberry plant named ‘Windsor’
PUBLIC DOMAIN
Patent expired October 30, 2020. 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
- PP12783
- Filed
- October 30, 2000
- Granted
- July 16, 2002
- Expires
- October 30, 2020
- Inventor
- LYRENE PAUL M
Abstract
A new and distinct low-chill tetraploid highbush blueberry (Vaccinium) variety of complex hybrid ancestry, based largely on V. corymbosum with some genes of V. darrowi . Its novelty consists of the following unique combination of features: 1. Produces a vigorous bush that is upright but somewhat spreading. 2. Has high resistance to cane canker ( Botryosphaeria corticis ) and medium resistance to stem blight ( B. dothidia ) and phytophthora root rot Phytophthora cinnamomi ). 3. Flowers and fruits well in areas of central and north Florida where the mean temperature of the coldest month is 60° F. or colder. 4. Ripens its fruit 60 days after flowering in north-central Florida (latitude 29.5). 5. Ripens 80% of its fruit between April 10 and May 5 in north-central Florida. 6. Produces berries that are very large, firm, dark-blue in color, have a large and sometimes humid picking scars, and a sweet, pleasant flavor. 7. Propagates readily from softwood cuttings.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and distinct highbush blueberry plant, substantially as illustrated and described, characterized by its vigorous, semi-upright bush, low chill requirements, and large, early-ripening fruit.
Read the full patent: US Plant Patent PP12783 in full — the complete specification, every figure, and the file history.