The experiment was carried out in AICRP on Floriculture at Chiplima, Odisha for 3 consecutive years from 2011-12 to 2013- 14. One year budded plants of cultivar ‘Mainu Parle’ were planted in beds of 2 x 1.8 m at spacing of 60 x 45 cm, following randomized block design in three replications. Black and white polythene mulches of 200, 300 and 400 micron each and paddy straw mulch was taken as various treatments with a control, where no mulching was applied and the weeds were allowed to grow as such. Observations were recorded for three consecutive years and pooled data was calculated. Maximum weed count (8.7/m²) was observed under transparent polythene mulch of 400 micron thickness where as no weeds grew under black polythene much irrespective of its thickness. Similarly in case of weed fresh weight (196.37 g) and weed dry weight (30.39g) were maximum in the plots treated with transparent polythene mulch of 400 micron thickness. No significant difference was found in number of days to first flowering from planting and branch counts per plant. However, in flowering duration, the plot treated with 300 micron thickness of black polythene mulch showed significant difference both during 2012-13 and 2013-14 (10.73 days). The most important among the yield driving parameter, the number of flowers per plant was studied, it was found that the plants treated with 300 micron black polythene mulch had a distinct edge over the other treatments in the year 2012-13 (27.12 nos.), 2013-14 (30.70 nos.) and also in the pooled data (25 nos.). Suggesting that 300 micron black polythene should be recommended for controlling weed in rose cultivar ‘Mainu Parle’.