A study on phonological characters of Silk Cotton tree revealed that the species commenced to shed leaves in December and became almost leafless in January, when it flowered. Fruits ripened in MarchApril and after shedding of fruits, new leaves and shoots appeared. Out of total dry matter of fruits, 21.1% was cotton-fibre (floss) and 12.6% was seed by weight. The average yield of cotton-fibre was 5.67 kg per tree per annum and the reproductive capacity ofthe species was found to be 33251.