Here in Madison, Wisconsin, our everbearing red raspberries begin to flower in June, and the first ripe fruit will appear in July.

The flowering season for blackberries lasts weeks. Ripe fruit timing from any one blossom is about two months.

The red variety I have goes about 5 weeks from first flowers to first fruit.

Blackberries also have a "terminal" berry in each cluster that ripens well before others. Of course the terminal blossom opens early also.