Genus
Callistemon
15 US plant patents have been granted in this genus. 2 are already in the public domain — anyone may propagate and sell them. The next of the 13 still protected comes off patent on December 1, 2031.
Still under patent — 13 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- RutCallPP23848Bottlebrush plant named ‘RutCall’UNDER PATENTDecember 1, 2031
- CV01PP24444Callistemon viminalis plant named ‘CV01’UNDER PATENTAugust 23, 2032
- LC01PP25011Callistemon viminalis plant named ‘LC01’UNDER PATENTMarch 22, 2033
- CC19PP25023Callistemon viminalis plant named ‘CC19’UNDER PATENTApril 24, 2033
- KPS38PP25673Callistemon viminalis plant named ‘KPS38’UNDER PATENTOctober 31, 2033
- LJ1PP27331Callistemon viminalis plant named ‘LJ1’UNDER PATENTOctober 4, 2034
- LJ23PP27547Callistemon viminalis plant named ‘LJ23’UNDER PATENTNovember 13, 2034
- CALKWRPP33724Callistemon plant named ‘CALKWR’UNDER PATENTNovember 19, 2040
- CNU06PP34778Callistemon plant named ‘CNU06’UNDER PATENTMarch 21, 2042
- CNU19PP34796Callistemon plant named ‘CNU19’UNDER PATENTMarch 21, 2042
- CNU07PP34797Callistemon plant named ‘CNU07’UNDER PATENTMarch 21, 2042
- CNU15PP34820Callistemon plant named ‘CNU15’UNDER PATENTMarch 21, 2042
- CNU01PP34739Callistemon plant named ‘CNU01’UNDER PATENTMarch 24, 2042
Already in the public domain — 2 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.
- Matthew FlindersPP17314Callistemon plant named ‘Matthew Flinders’PUBLIC DOMAINSeptember 24, 2025
- BoyettePP5072Callistemon `Boyette`PUBLIC DOMAINNovember 24, 2001
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.