I want to go to Dalian for cherry blossom festival. How and when can I go??

Where do you plan to start your journey?
Dalian Lushu area is a good place to see the cherry blosson festival. Longwangtang Cherry Park in Lushu is suggested for you.
From DL North Railway Square, you can find buses for Lvshun (旅顺) and then take this bus to reach Longwangtang Stop. Get off the bus, you can take a taxi to reach the park directly.
The exact date of the festival is not published, but generally speaking, the festival is around the late April to early May.