1. (a) No claim shall be made for chemical composition or nutritive constituents, except as provided in (c) and (d) of this section.
2. (b) When a beneficial substance is labeled as a single-ingredient specific material, such as peat moss or leaf mold, the product shall consist of not less than 95 percent of that material.
3. (c) Organic products such as bark, wood chips, wood sawdust and peat or peat moss claimed to be nitrogen fortified, nitrogen stabilized, or with other terms to inform that the product contains nitrogen added to compensate for nitrogen likely to be taken from soil due to the ingredient's decomposition therein, are beneficial substances when such additional nitrogen is 0.5 percent or less. Any claim for such nitrogen stabilization or fortification or similar term made on the label of a beneficial substance shall be accompanied by a statement of the total percent of nitrogen contained therein.
4. (d) Iron (Fe), may be guaranteed at less than 0.1 percent.
5. (e) If reference is made to the acidity or alkalinity of the product, or its influence on the soil, the range or specific pH of the product must be guaranteed.

For reference to beneficial substances intended to condition soils solely through physical means, refer to CCR Sections 2303(j).

Note: Authority cited: Sections 407, 14502, 14601 and 14631, Food and Agricultural Code. Reference: Sections 14513, 14601 and 14631, Food and Agricultural Code.

History

1. Repealer and new section filed 8-2-91; operative 8-2-91 pursuant to Government Code section 11346.2(d) (Register 92, No. 7).

2. Amendment of subsection (g) filed 6-22-2017; operative 10-1-2017 (Register 2017, No. 25).

3. Amendment of section heading and subsections (a)-(e)(1) filed 4-13-2020; operative 4-13-2020 pursuant to Government Code section 11343.4(b)(3) (Register 2020, No. 16).

4. Amendment of section heading and amendment of subsections (e)-(e)(1) filed 2-23-2022; operative 4-1-2022 (Register 2022, No. 8).

5. Amendment of section heading, section and Note filed 11-14-2025; operative 11-14-2025 pursuant to Government Code section 11343.4(b)(3) (Register 2025, No. 46).