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The Patent Garden

Nursery or breeding house

UNIV OKLAHOMA STATE

8 US plant patents, granted between 1988 and 2020.

Still under patent — 4 cultivars

Soonest to come off patent first. You may not propagate these for sale until the date shown.

Already in the public domain — 4 cultivars

Most recently freed first. Anyone may propagate and sell these plants — though the name it is sold under may still be a live trademark.