US Plant Patent PP17309

Prairie Sky

Hosta plant named ‘Prairie Sky’

PUBLIC DOMAIN

Patent expired September 22, 2025. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on September 20, 2025. This patent earned 2 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP17309, the photograph of Prairie Sky printed in the patent. — Figure 1 from US Plant Patent PP17309, 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: PP17309
Filed: September 20, 2005
Granted: December 26, 2006
Expires: September 22, 2025
Assignee: SHADY OAKS NURSERY LLC
Inventor: HANSEN HANS ANDREW

Abstract

A new cultivar of Hosta named ‘Prairie Sky’, that is characterized by its intensely blue foliage with leaves that are heart-shaped, slightly cupped and lightly puckered. ‘Prairie Sky’ has a vigorous growth habit and blooms in mid July to mid August with pale lavender flowers on erect scapes.

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 Hosta plant named ‘Prairie Sky’ as herein illustrated and described.

Read the full patent: US Plant Patent PP17309 in full — the complete specification, every figure, and the file history.