Some important ecological topics about Tetranychus cinnabarinus (Boisduval.) (Acari: Tetranychidae) pest management was studied in a comercial crop of carnation Dianthus caryophyllus L. in greenhouse in Suba - Cundinamarca. Population of mites was evaluated on 3 thirds and 9 ages of plants during rainy and dry season. 34.83 34.61% were found on the up third and 27.84% were found on the lower third of plants. Mite population reached equilibrium state, de life cycle was 37.19C% for egg; 20.50% for larva; 24.37% ninfal stages and 17.54% for adults. Trifolium repens L.; Stellaris media (L.) Cyrill; Pos annua L.; Veronica persica Poir; Holcus lanatus L. and Oxslis corniculata L. were found as secondary hosts for T. cinneberinus during this studv, In laboratory conditions, 300C and 85 ± 5% R.H., the life cycle of Tetrsnychuscinnabarinus (Boisduval.) on Triototium repens L. Was shorter than the life cycle on carnation (Disnthus csryopbvtlu. L.).