US Plant Patent PP28556
Summer's Swan Song
Vernonia plant named ‘Summer's Swan Song’
UNDER PATENT
Still under patent. Protection ends April 5, 2036.
Twenty years from the filing date would end on March 10, 2036. This patent earned 26 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP28556
- Filed
- March 10, 2016
- Granted
- October 24, 2017
- Expires
- April 5, 2036
- Assignee
- CHICAGOLAND GROWS INC, AULT JAMES ROBERT
- Inventor
- AULT JAMES ROBERT
Abstract
A new cultivar of Vernonia plant, ‘Summer's Swan Song’, that is characterized by its compact, bushy habit with stems that do not lodge, its inflorescence branches that are longer than other Vernonia varieties forming an interlocking network of branches that add to the overall plant sturdiness and resistance to stem lodging, its foliage and stems that are tinted red and purple in color, its high resistance to rust and powdery mildew, in being reliably hardy in U.S.D.A. Zones 4 to 9 and in being very drought tolerant.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
It is claimed: 1. A new and distinct variety of Vernonia plant designated ‘Summer's Swan Song’ as described and illustrated herein.
Read the full patent: US Plant Patent PP28556 in full — the complete specification, every figure, and the file history.