'Roses don't really like this heat either. They will continue to
flower,
but the blossoms will be smaller. They need a lot of water in the
heat, and wash the foliage off in the a.m with the hose or sprinkler
every week. Have you given them a good dose of fertilizer lately?
They would enjoy some fish emulsion or alfalfa pellets. And mulch
them.'

I fully agree with this advise, also you may like to try a few banana
skins chopped up and mixed into and spread around with the mulch that
you use around your roses. The gases released ( Ethylene ) from the
banana skins breaking down will release into the air around your roses
and promote flowering. The skins help to fertilize your plants also. I
use approx 4-5 chopped skins / plant once every couple of weeks
depending on the amount of hungry worms your soil has.
Try to raise your rose garden beds for drainage.
Add organic matter, leaf mould or compost to the soil.
Keep roses well watered.
The roses i have grow in the past loved the hand held hose spray,
daily, in the morning for a couple of mins each bush, spray leaves,
flowers and all. During really hot weather they liked a quick hose
spray on soil level at dusk aswell. Beware of fungal attack on the
lower leaves
P.S. Bananas are great in a cake.

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