Seedfork, you being in Z:8 will give you blooms much earlier than zone five. It is just simpler to go with the flow of the plants and keep records of what happens in your garden for future reference for yourself and anyone else in your zone. Each garden has its own micro climate ant the extra care that some of us give our plants will produce more output from our plants. There is so much variables to all of this. More water, mulch, soil amendments, fertilizer etc changes the cycle of every thing.