Tex. Agriculture Code § 19.007

(a) The department shall establish:

(1) the certification standards for genetic purity for varieties of citrus budwood by type;

(2) procedures that must be followed to prevent the introduction of dangerous citrus pathogens into budwood stock from and in foundation groves;

(3) procedures for certification of citrus budwood grown in foundation groves; and

(4) procedures for certification of citrus nurseries and citrus nursery trees.

(b) The department shall establish standards and procedures for:

(1) inspecting and testing for diseases, using current technologies in disease diagnosis, and for desirable horticultural characteristics of citrus budwood grown in designated foundation groves;

(2) certifying citrus budwood and citrus nurseries meeting requirements established under this chapter;

(3) maintaining a source of citrus budwood of superior tested varieties for distribution to the citrus industry;

(4) verifying propagation of citrus varieties and special rootstocks for growers on request, including an inspection of the citrus nursery's books and records;

(5) maintaining appropriate records required for participation in the citrus budwood certification and citrus nursery stock certification programs;

(6) inspecting citrus nurseries to ensure that the structures in which citrus nursery stock is propagated meet standards set by the department, including standards for:

(A) size;

(B) construction;

(C) insect resistance;

(D) citrus nursery sanitation;

(E) movement of the citrus nursery stock from one structure to another at the nursery;

(F) proximity to nearby citrus groves; and

(G) other standards for the operation of a certified nursery as may be required by the department; and

(7) requiring each citrus nursery to submit source tree bud cutting reports to the department not later than the 30th day after citrus trees are budded.