Seasonal Rose Pruning. There are differing opinions about when to prune roses. Some people like to prune in the fall, some in the spring. Heirloom says: both (with the exception of once-blooming roses, which should be pruned once just after flowering, see section on Special Situations).
The average maximum daytime temperature in Dubai in September is a very hot 38Â°C (100Â°F), while the average minimum night-time temperature is a warm 26Â°C (79Â°F). On average 0 mm (0 inches) of rain normally falls in Dubai during September with very little chance of rain falling during the month.
Weather in Canada in September. The average maximum daytime temperature in Canada in September is a comfortable 20Â°C (68Â°F). There are usually 6 hours of bright sunshine each day, which represents 46% of the 12 hours of daylight. Expect 80mm (3.1 inches) of rainfall across the whole of September with 12 days with some rain falling. Maximum UV levels will be moderate (5 UV index) at midday when the skies are clear. The average night-time temperature is usually a cool 9Â°C (48Â°F). The weather in Canada in September is represented by Ottawa.