US Plant Patent PP17998
DBB03
Dianella caerulea plant named ‘DBB03’
PUBLIC DOMAIN
Patent expired September 29, 2025. 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
- PP17998
- Filed
- September 29, 2005
- Granted
- September 11, 2007
- Expires
- September 29, 2025
- Assignee
- VERSASCAPES L L C
- Inventor
- LAYT TODD ANTHONY
Abstract
‘DBB03’ is a distinctive variety of Dianella caerulea, which is characterized by the combination of its open growth, a blue-green foliage, pale blue flowers, slightly spreading and semi-compact growth habit, and an absence of canes, which is unusual for a Dianella caerulea, particularly when compared to the ‘Sydney Ecotype’. ‘DBB03’ is also less prone to falling over than the parent type.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct variety of Dianella caerulea plant named ‘DBB03’, substantially as described and illustrated herein.
Read the full patent: US Plant Patent PP17998 in full — the complete specification, every figure, and the file history.