La. Stat. tit. 9 § 1824

Current with changes from the 2024 legislative session effective on or before 7/1/2024, from Acts 2,3, 6-535, and 580-647
Section 9:1824 - Consequence of trustee's failure to accept

If the trustee was not a party to the trust instrument, he must accept the trust in writing within a reasonable time after its creation, or the proper court shall appoint a trustee.

La. R.S. § 9:1824