Hi, I planted 2 austrian copper and 2 persian yellow roses this spring and all four plants bloomed at different times throughout the summer. Normally these roses bloom in the spring but as they were young, or grown in a green house, or something, I guess they got out of whack. Has anyone experienced this or researched why they do this? It would be nice to experience these roses in bloom throughout the summer if they could be tricked into bloom by whatever causes this to happen. Any ideas?