A 3-yr study was conducted at the Texas Agricultural Experiment Station farm in the Texas Rolling Plains during the 1998- 2000 growing seasons to quantify the effect of planting pattern on population abundance of the cotton aphid, Aphis gossypii Glover, and bandedwinged whitefly, Trialeurodes abutilonea (Haldeman). ‘Sphinx’ cotton was planted in late April, mid- May, and early June, representing early, normal, and late planting dates in the Texas Rolling Plains. Within each planting date, planting pattern treatments included 1) solid-row stand, 2) two rows planted, one row skipped (Skip 2x1), and 3) two rows planted, two rows skipped (Skip 2x2). For this article, data are averaged over planting dates; thus, only the influence of planting pattern is reported. Abundance of cotton aphids and whitefly nymphs were estimated by inspecting 10 leaves from the upper half and 10 leaves from the lower half of plants from each plot. Insects were surveyed every week, beginning early August and continuing until populations declined. Analysis of variance showed that average cotton aphid abundance varied significantly with planting pattern. Solid-row pattern attracted fewest numbers of cotton aphids, followed by Skip 2x1 and Skip 2x2. Planting pattern also had a significant effect on whitefly abundance, but the influence of planting pattern on whitefly abundance was opposite to that for cotton aphids. Soil moisture was marginally higher on skip-row plots compared to the solid-row plots, but the leaf moisture content was significantly higher in skip-row plots compared to the solid-row plots. Plants were significantly taller in skip-row plots compared to the solid-row plots. Plant vigor and higher leaf moisture content likely contributed to higher aphid abundance and lower whitefly abundance in skip-row plots compared to the solid- row plots.