US Plant Patent PP12550
Calypso Queen
Hemerocallis plant named ‘Calypso Queen’
PUBLIC DOMAIN
Patent expired September 8, 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
- PP12550
- Filed
- September 8, 2000
- Granted
- April 16, 2002
- Expires
- September 8, 2020
- Assignee
- TWYFORD PLANT LAB INC
- Inventor
- KASKEL MATHEW
Abstract
A new and distinct cultivar of Hemerocallis named ‘Calypso Queen’ characterized by its gold-orange colored flowers with a red eye-zone which are borne on branched scapes. The flowers do not fade in warm, bright conditions and are resistant to water spotting. Plants of ‘Calypso Queen’ bloom very early in the season, and then repeatedly throughout the growing season. Plants of ‘Calypso Queen’ are evergreen, thus they are attractive in landscapes. The plant grows vigorously, and propagates easily by division or tissue culture.
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 Hemerocallis plant named ‘Calypso Queen’ as illustrated and described.
Read the full patent: US Plant Patent PP12550 in full — the complete specification, every figure, and the file history.