The study was conducted at Ladoke Akintola University of Technology, Ogbomoso, Nigeria, (latitude 08˚10'N and longitude 04˚E') in 2011. Surface (0 - 15 cm depth) soil samples from crude oil polluted sites and unpolluted sites were collected from five different points with the aid of bucket auger along PPMC Warri-Kaduna crude oil pipeline spill site near Effurun Round about Warri, Delta state. The soil samples were mixed thoroughly, air dried and sieved with 2 mm mesh sized sieve to remove debris. 2 kg each of polluted and unpolluted soil samples were weighed and transferred into each of the planting pots.