US Plant Patent PP35213
Red Flame
Panicum plant named ‘Red Flame’
UNDER PATENT
Still under patent. Protection ends November 4, 2042.
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
- PP35213
- Filed
- November 4, 2022
- Granted
- June 6, 2023
- Expires
- November 4, 2042
- Assignee
- WALTERS GARDENS INC, QUINN MARTIN
- Inventor
- QUINN MARTIN
Abstract
The new and distinct cultivar of ornamental grass named Panicum virgatum ‘Red Flame’ with blue-green foliage that develops bright wine coloration in late summer on a large portion of the upper foliage, with upright and arching habit and dense culms producing airy panicles of burgundy, suitable as a multi-seasonal interest as a mass or specimen landscaping, potted plant, and for cut flower arrangements.
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 cultivar of switchgrass Panicum virgatum plant named ‘Red Flame’ as herein described and illustrated.
Read the full patent: US Plant Patent PP35213 in full — the complete specification, every figure, and the file history.