Remediation of environmental pollution has been of great concern in recent years. This study wascarried out to investigate the potentials of Nauclea diderrichii seedlings to remediate heavy metalsfrom spent engine oil (SEO) contaminated soil. SEO from diesel and petrol engines in differentquantities were applied to each plant using 2 kg soil. Plant height, collar diameter, number ofleaves, root length were assessed. Amount of lead and cadmium present in the leaves, stem androot of the seedlings were assessed at the end of the experiment. Result showed that 100 % of theseedlings subjected to various treatments survived for the duration of 5 months. There was nosignificant difference (α0.05) in the height of N. diderrichii seedlings. Significant (α=0.05) negativereductions were observed in the seedlings collar diameter, no. of leaves and root length. There wassignificant difference (α0.05) in the amount of lead and cadmium extracted by N. diderrichiiseedlings. This study has been able to show that N. diderrichii has the ability/potential tophyto-extract heavy metals from soil.
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