Here's a chart of the past 8 years of Lupine Blooms. BUT . . . weather and location makes a big difference in blooming cycles. If we have cool spring days, the blooms last so much longer.  If we get a heat wave; Lupine can be going to seed at the bottom of its spike before the top is even finished blooming.  It's difficult predict when or where the best blooms will be each year, but you can Like/Follow the Facebook group Celebration of Lupines for posts of photos as the flowers bloom so that you can decide when it is the perfect time to visit certain locations.