Chapter 21 - CITRUS
- Subchapter A - CITRUS QUARANTINES (§§ 21.1 — 21.10)
- Subchapter B - CITRUS QUALITY (§§ 21.20 — 21.23)
- Subchapter C - FOUNDATION BLOCK, SCION BLOCK, INCREASE BLOCK, AND PRODUCTION OF CERTIFIED BUDWOOD (§§ 21.30 — 21.44)
- Subchapter D - CITRUS NURSERY STOCK CERTIFICATION PROGRAM (§§ 21.60 — 21.69)
- Subchapter E - CITRUS NURSERY STOCK PROPAGATION IN AREAS OF TEXAS OUTSIDE THE CITRUS ZONE (§§ 21.80 — 21.85)
- Subchapter F - STATE CERTIFIED CLEAN CITRUS STOCK PROGRAM (§ 21.90)