US Plant Patent PP20048
Mean Mister Mustard
Daylily plant named ‘Mean Mister Mustard’
UNDER PATENT
Still under patent. Protection ends November 13, 2027.
Twenty years from the filing date would end on November 2, 2027. This patent earned 11 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP20048
- Filed
- November 2, 2007
- Granted
- June 2, 2009
- Expires
- November 13, 2027
- Assignee
- CT TON NURSERY INC
- Inventor
- APPS DARREL A
Abstract
A new and distinct Hemerocallis cultivar is provided. The new cultivar is very floriferous and forms attractive highly ruffled deep yellow flowers displaying a burgundy eye zone and edges, substantial substance, and a funnel-shaped form over an extended period of time. In U.S.D.A. Hardiness Zone No. 6, blooming commonly begins during late June and commonly ends during mid-August. The new cultivar displays a plurality of fans and a plurality of scapes per fan. The new cultivar is well suited for growing as distinctive colorful ornamentation in the landscape.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct cultivar of Hemerocallis plant of the dormant type, substantially as herein shown and described, which: (a) forms attractive highly ruffled deep yellow flowers having a burgundy eye zone and edges, substantial substance, and a funnel-shaped form, (b) possesses a long blooming season with repeat blooming, (c) exhibits a propensity to readily display a plurality of fans, and (d) readily forms a plurality of scapes per fan over the flowering season; substantially as illustrated and described.
Read the full patent: US Plant Patent PP20048 in full — the complete specification, every figure, and the file history.