Genus
Asparagus
26 US plant patents have been granted in this genus. 21 are already in the public domain — anyone may propagate and sell them. The next of the 5 still protected comes off patent on November 25, 2027.
Still under patent — 5 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- M256PP20629Male asparagus hybrid ‘M256’UNDER PATENTNovember 25, 2027
- NJ977PP21066Male Asparagus hybrid plant ‘NJ977’UNDER PATENTMarch 4, 2028
- NJ953PP21170Male asparagus hybrid plant ‘NJ953’UNDER PATENTMarch 4, 2028
- AmadeusPP30544Asparagus plant named ‘Amadeus’UNDER PATENTNovember 10, 2037
- SpartacusPP30712Asparagus plant named ‘Spartacus’UNDER PATENTNovember 28, 2037
Already in the public domain — 21 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.
- NJ44PPP18409Asparagus plant named ‘NJ44P’PUBLIC DOMAINMay 10, 2026
- Jersey JewelPP8222Asparagus plant named `Jersey Jewel`PUBLIC DOMAINNovember 15, 2011
- AustinPP8318Asparagus plant named AustinPUBLIC DOMAINNovember 15, 2011
- Asparagus plantPP7311PUBLIC DOMAINAugust 11, 2009
- Jersey PrincessPP7155Asparagus plant named `Jersey Princess`PUBLIC DOMAINDecember 7, 2008
- Jersey GeneralPP6965Asparagus plant -- `Jersey General`PUBLIC DOMAINFebruary 24, 2008
- TaraPP6966Asparagus plant--`Tara`PUBLIC DOMAINFebruary 24, 2008
- LouisePP6967Asparagus plant--`Louise`PUBLIC DOMAINFebruary 24, 2008
- KathrynPP6968Asparagus plant--`Kathryn`PUBLIC DOMAINFebruary 24, 2008
- Jersey TitanPP6969Asparagus plant--`Jersey Titan`PUBLIC DOMAINFebruary 24, 2008
- Jersey GemPP6970Asparagus plant--Jersey GemPUBLIC DOMAINFebruary 24, 2008
- LindaPP6622Asparagus plant named LindaPUBLIC DOMAINJuly 6, 2007
- Jersey JadePP6623Asparagus plant named Jersey JadePUBLIC DOMAINJuly 6, 2007
- Jersey KnightPP6624Asparagus plant named Jersey KnightPUBLIC DOMAINJuly 6, 2007
- Discovered and asexually reproduced a certain new and distinct variety of asparagus plantPP5652PUBLIC DOMAINOctober 21, 2003
- Scott HowardPP5549Asparagus plantPUBLIC DOMAINOctober 5, 2003
- M138PP5316Asparagus plant--M138PUBLIC DOMAINFebruary 18, 2003
- F189PP5317Asparagus plant--F189PUBLIC DOMAINFebruary 18, 2003
- Asparagus plantPP5187PUBLIC DOMAINJanuary 31, 2001
- Asparagus plantPP4675PUBLIC DOMAINDecember 19, 1999
- Asparagus plantPP4677PUBLIC DOMAINDecember 19, 1999
A patent expiring frees the plant, and its cultivar name comes with it — cultivar names cannot be trademarked, so they are always free to use. What it does not free is any brand name the plant is marketed under. Those are trademarks and renew indefinitely.