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The Patent Garden

US Plant Patent PP18572

Sweet Caroline Sweetheart Light Green

Ornamental sweetpotato plant named ‘Sweet Caroline Sweetheart Light Green’

PUBLIC DOMAIN

Patent expired March 31, 2026. 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 PP18572, the photograph of Sweet Caroline Sweetheart Light Green printed in the patent.
Figure 1 from US Plant Patent PP18572, 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
PP18572
Filed
March 31, 2006
Granted
March 11, 2008
Expires
March 31, 2026
Assignee
UNIV NORTH CAROLINA STATE
Inventor
YENCHO GEORGE CRAIG; PECOTA KENNETH; HANCOCK CHARLES NEWELL

Abstract

Ipomoea batatas ‘Sweet Caroline Sweetheart Light Green’ is a very compact to compact, partially mounded cultivar producing many shoots and having dense foliage. This cultivar is distinguishable from other cultivars by small, heart-shaped, light green to chartreuse colored leaves and erect to semi-erect architecture. The plant has good vigor, is very well branched, and has thin stems that tend to intertwine. It is much less vigorous than Ipomoea batatas ‘Margarita’ and ‘Blackie’, and is well suited for container production. The production of flowers by ‘Sweet Caroline Sweetheart Light Green’ is are even under short day conditions.

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 Ipomoea batatas plant named ‘Sweet Caroline Sweetheart Light Green’, substantially as illustrated and described herein.

Read the full patent: US Plant Patent PP18572 in full — the complete specification, every figure, and the file history.