The seasonal occurrence of the earhead bugCalocoris angustatusLeth. (Hemiptera: Miridae) in main and ratoon crops of two sorghum hybrids was studied in field experiments with fortnightly sowings. During April to June, 1984, early April sowings were severely infested and early June sowings had less infestation. Hybrid CSH 5 harboured more bug population than the other. A ratoon crop had a lower population than the main crop. In July to October, 1984, the crop sown in the first fortnight of September had the lowest population of 18 bugs per ten panicles and a higher population of 142–159 bugs in July sown crops. The main crop had a higher population in all the sowings with an average of 116 bugs per ten panicles whereas the ratoons of September and October had no infestation, a mean of 7 bugs per ten panicles. A third experiment sown during January to March 1985 differed from the others by having a lower population in the main crop (22 bugs) than in ratoon (72 bugs/10 panicles). In the main crop, the January sown crop had no population and crops sown in February and March were little infested, whereas ratoon crops had a higher population than the main crop in all sowings. In general, crops sown in February and March first fortnight, had a higher population. In all the sowings, of the four stages of observation, pre‐flowering, milky, dough and maturity stages, the dough stage had the maximum population of bugs except in crops sown during February and March 1985, where the milky stage had the highest population. Cultivar CSH 5 was always more attacked than K‐Tall.