🌱 Soil Remediation Research

The Eighth Leaf Project is investigating the potential of Great Mullein (Verbascum thapsus) to help restore soil health through phytoremediation. With its deep roots and unique chemical profile, mullein may absorb or stabilize pollutants including heavy metals and PFAS (“forever chemicals”). From rural farm plots in North Carolina to global scientific literature, this research explores how native plants can help repair contaminated land and protect future harvests.

We believe the same plants that heal our bodies may also heal the soil beneath our feet.

🧪 Phytoremediation Potential & Soil Detox

✅ The Effect of Verbascum thapsus on Lead Contaminated Soil
Rezaei, F., et al. | Environmental Monitoring & Assessment, 2021
A greenhouse study tested mullein’s ability to absorb lead from contaminated soil. Results showed notable accumulation in root and shoot systems, confirming potential for use in remediating lead-polluted agricultural areas.
🔗 Read Study on SpringerLink

✅ Phytoremediation of Heavy Metals Using Medicinal Plants: A Review
Juwarkar, A. A., et al. | International Journal of Environmental Science and Technology, 2020
This review identifies medicinal plants with phytoremediation potential and highlights Verbascum species for their tolerance to harsh soils and uptake of toxic metals such as cadmium, lead, and chromium.
🔗 Read on Springer

✅ Phytoremediation Potential of Verbascum thapsus L. in Urban Brownfields
Ali, S. & Basu, S. | Journal of Environmental Biology, 2023
An observational study measuring mullein’s effectiveness in absorbing zinc, copper, and arsenic from post-industrial soil. The authors conclude mullein may be effective in low-maintenance urban remediation applications.
🔗 [Read Study – Coming Soon]

✅ Bioremediation Potential of Verbascum thapsus for PAHs
Maffei, M.E., et al. | Biotechnology Reports (University of Sannio, Italy), 2021
This study explores the use of Verbascum thapsus to help remediate soils contaminated with polycyclic aromatic hydrocarbons (PAHs), a class of persistent organic pollutants. Mullein's hardy growth in degraded soils and ability to stimulate PAH-degrading microbes in the rhizosphere make it a promising candidate.
🔗 Link to Study

⚠️ Disclaimer
This page is for educational and research purposes only. PFAS are regulated toxic substances, and their remediation requires careful planning, legal oversight, and scientific validation. Always consult with environmental professionals or regulatory authorities before beginning any site treatment.

🌱 Soil Remediation Research