What contaminants are specifically mentioned as risks in poorly sourced or questionable lavender tea products?

Pesticides or heavy metals

A major factor determining safety for any herbal product, including lavender tea, is the purity and source verification of the raw material. When lavender is grown commercially without rigorous oversight, there is an elevated risk that the final dried product consumed by individuals may be contaminated with harmful environmental agents. The text specifically highlights that poorly sourced lavender can contain ingested pesticides used during cultivation, or heavy metals absorbed from contaminated soil or water. These adulterants pose direct toxic risks upon ingestion, and this danger is magnified for vulnerable populations, meaning consumers must actively seek out organically certified or thoroughly tested sources to ensure quality.