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US Plant Patent PP18737

TR20

Dianella tasmanica plant named ‘TR20’

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.

Figure 1 of US plant patent PP18737, the photograph of TR20 printed in the patent.
Figure 1 from US Plant Patent PP18737, reproduced as printed. Photographs in a plant patent are taken by the applicant. Reproduction of the patent document is permitted; the image is shown whole and uncropped for that reason.

The record

Patent number
PP18737
Filed
September 29, 2005
Granted
April 22, 2008
Expires
September 29, 2025
Assignee
VERSASCAPES L L C
Inventor
LAYT TODD ANTHONY

Abstract

‘TR20’ is a distinctive variety of Dianella tasmanica with a clumping habit, which is characterized by the combination of a large flower cluster with blue flowers, green foliage with red basal shoots and red green lower leaf areas, which changes to a reddish-green foliage with red leaf margins in cooler seasons, and, in the Spring, TR20 leaf colour is yellow-green with some red leaf margins and red basal shoots and red-green lower leaf areas.

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 tasmanica plant named ‘TR20’, substantially as described and illustrated herein.

Read the full patent: US Plant Patent PP18737 in full — the complete specification, every figure, and the file history.