Heavy Metal Sequestration

Heavy metal sequestration refers to a plant's physiological capacity to accumulate and concentrate heavy metals (such as cadmium, lead, or mercury) in tissues rather than translocate them systemically. Cannabis plants, like many species, can bioaccumulate metals from contaminated soil or water—a trait of significant concern for cultivation in industrial or remediated sites. Breeders and cultivators track this trait because plants grown in compromised substrates may concentrate these elements in harvestable material. Understanding sequestration patterns is critical for soil testing, substrate selection, and post-harvest quality assurance. This is primarily a cultivation-genetics concern rather than a breeding target, as most legitimate programs actively select against strong accumulation. Documentation of a strain's metal uptake behavior remains limited but increasingly relevant in regula

Breeders working in phytoremediation research or cultivating in formerly industrial sites monitor sequestration rates to predict contamination risk. Selection for lower bioaccumulation in susceptible genetics is an emerging focus in quality-focused breeding programs.