Two years of field studies were carried out to study the effect of three planting dates of cowpea, April 1st, 15th and 30th, on the levels of infestation by different pests, namely: Tetranychus uit/cae, Tetranychus cucurbitacearum and whitefly, Bemi’/a tabaci as well as Thrips tabad Also, the resultant yield was recorded. Data revealed that the numbers of different stages of T uit/cae were increased by delaying the planting date on cowpea plants. Plant cultivated on April, Vt, 15th and 30th harbored 0.48, 1.40 and 2.15 eggs, 0.42, 0.72 and 1.31 mobiles, 0.90, 2.11 and 3.46 totals / leaflet, respectively. The earliest planting date harbored the fewest mean number of T cucurbitacearum, eggs, mobiles and total (0.40, 0.03 and 0.43/leaflet, respectively). Lately sowing correlated with plants showed the lowest infestation by different stages of white fly, B. tabaci [0.33 (eggs/leaflet), 0,12 (nymphs/leaflet) and 0.04 (pupae/leaflet), 0.03 (adult/plant) and 0.51 (individuals of total stages)]. The results included that the abundance of Thrips tabaci individuals increased only in the early planting date, mean rates of infestation in two seasons were (0.06, 0.05 and 0.02 nymphs, 0.01, 0.01 and 0.00 adult, 0.06, 0.05 and 0.02 individuals of total stages/leaflet respectively). Finally, the sowing in the earliest date (April, Vt) lead to have the highest dry pods yield and the lowest infestation by the spider mites, T uit/cae & T cucurbitacearum.