The Arboretum is beautiful year around. It is open every day from dawn to dusk. Admission is free. Use the north entry to campus, go past the guardhouse and park in the spaces to your left. You do not have to pay for parking.
Children and pets are welcome. We simply ask that they stay on the paths in order to protect vegetation and prevent damage to the irrigation system. Please pick up pet waste and pets must remain on leashes. Trash cans are on site for disposal. 
Most of the garden is wheelchair accessible. There is a wheelchair ramp and a handicapped parking space at the east end of the parking area. 
We're sorry for the inconvenience, but restrooms are only open when classes are in session or the Garden Center is open.
While you're here, you may also want to visit the Seattle Chinese Garden, which is adjacent to the Arboretum, and The Northwest Wine Academy, which is across the parking lot to the south east.