Volcanic Pumice for Horticultural Soil Amendment from Canada
Graded volcanic pumice used to improve soil aeration and drainage in horticulture and hydroponics. Classified HTS 2513.10.0080 as pumice stone with abrasive properties, though used agriculturally. Natural porosity retains moisture while preventing compaction.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Test pH and soluble salts for agricultural import permits in destination countries
• Declare particle distribution to distinguish from expanded clay aggregates
• Avoid sterilization treatments that could classify as Chapter 30 medicaments