US Plant Patent PP33878
Marshmallow
Leucanthemum plant named ‘Marshmallow’
UNDER PATENT
Still under patent. Protection ends July 27, 2041.
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
- PP33878
- Filed
- July 27, 2021
- Granted
- January 18, 2022
- Expires
- July 27, 2041
- Assignee
- WALTERS GARDENS INC, HANSEN HANS A
- Inventor
- HANSEN HANS A
Abstract
The new Shasta daisy plant, Leucanthemum ‘Marshmallow’, is a sturdy plant with green serrated foliage and stiff stems. The numerous freely-flowering inflorescences producing buds beginning with light yellow ray florets developing to near white. The outer ray florets are lanceolate to linear and emarginate and the inner ray florets are mostly laciniate and retain their yellow coloration longer. The center disk florets are yellow. Flowering repeats into fall if deadheaded. The new plant is useful in the landscape as a long-flowering border, in mass, as accent plants and containerized for patio or indoor use, or as a cut flower.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. The new and distinct Shasta daisy plant Leucanthemum ‘Marshmallow’ as herein shown and described.
Read the full patent: US Plant Patent PP33878 in full — the complete specification, every figure, and the file history.