My roses usually have two main heavy blooming seasons. The first is in June (which your new plants probably did not do because they needed time to establish themselves) and again in the fall - usually in September. If you water and feed them - this is a typical bloom pattern for many varieties. I have a climber that tends to bloom from June to October - but it definitely has a HEAVIER bloom at the start in June and again in September. Each variety IS different though. As for your plants, they will likely bloom like this next year... now that they have settled in and gotten established. Be sure to prune them in the spring, and provide them with lots of water and fertilizer throughout their growing season. Roses really are not hard to care for (with the exception of some temperamental varieties)... and they reward you with such beauty for such little effort.