I would dead head ASAP, every spent bloom. Every day a spent flower stays on the bush is one more day which tthe new lateral growth's flower that emerges below your dead head cut is delayed in blooming. This is especially true if the bush jn question is prone to produce hips, which drastically impact rebloom if not dead headed promptly. Of course, daily dead headings are often not practical, especially during inclement weather, or when job obligations create limitations of available time. Retirees have a cake walk in this last regard.

I would dead head ASAP, every spent bloom. Every day a spent flower stays on the bush is one more day delathe new lateral growth's flower that emerges below your dead head cut is delayed in blooming. This is especially true if the bush jn question is prone to produce hips, which drastically impact rebloom if not dead headed promptly. Of course, daily dead headings are often not practical, especially during inclement weather, or when job obligations create limitations of available time. Retirees have a cake walk in this last regard.cially true if the bush jn question is prone to produce hips, which drastically impact rebloom if not dead headed promptly. Of course, daily dead headings are often not practical, especially during inclement weather, or when job obligations create limitations of available time. Retirees have a cake walk in this last regard.

If you can go through your roses once a week doing all your dead head cuts of the most recent spent blooms, this will give you a good handle at getting the most and quickest rebloom from your roses. More frequently, even daily, is service above and behind the call of duty, especially when daytime high temps are in the plus 90s!

Trying to control the sequence of blooming after the first spring flush is not an easy task. Every year is different. Hot summer, cool summer, wet summer, dry summer, disease free summer, black spot starting in April (yes, it can happen....not to say how unpredictable powdery mildew is in attacking!)........these all effect the progress of blooming after the first spring flush.

I think the greatest determination of a good bloom show during the 'dog days,' of summer is keeping up an aggressive watering program, geared to balancing it with natural rainfall and temperatures, which we have no control over.

Water, water , water, and then water some more! You will have the greatest bloom production possible under summer growing conditions, and set yourself up for a grand end of summer/autumn display. Roses that languished all summer, surviving, not thriving, because watering was insufficient, are not going to kick into fall bloom as easily as those that have been well watered all summer long.

A well watered rose also fights disease more effectively, too.

Moses.

Please forgive the repetitive paragraph. The word processing HOUZZ uses is not compatible with my system, making corrections monumental tasks.

Exactly what Moses wrote... deadhead each bush completely asap. Every day your bush sits there with faded blooms is one more day before the next bloom cycle. And as for trying to stagger rebloom, each different rose reblooms at a different pace. The general "rule of thumb" is ~45 days, so 6-ish weeks, but mine vary greatly in that regard, with some reblooming much faster and some a bit longer. Caveat is that I live in a mild summer area where roses bloom well in the summer and aren't shut down by extreme heat.

My schedule does not allow me to see my roses daily, much less take the proper time to keep up with deadheading. I let them bloom well in the spring and when it is almost finished I prune the entire bed in a couple of days and start over. I am sure if you keep up with deadheading you can minimize the gap where nothing is blooming.