3,038. What Happens in Adar

Hilchos Kilayim 2:15

On the first day of Adar, an announcement is made about mixed species; everyone must go to their gardens and fields and clear them of mixed species. On 15 Adar, agents of the court go throughout the land to see that this has been done.

Hilchos Kilayim 2:16

It used to be that the agents of the court would uproot mixed species and dispose of them; this pleased the owners of such fields because others were cleaning their fields for them. Subsequently, the courts would declare ownerless any field in which mixed species were found, assuming that the secondary species was 1/24 of the total crop. If the mixed species was less than that, they left the field alone.