Yes, the Arboretum has 2 picnic areas.
The first is located towards the rear of the gardens between the Camellia Walk and the Japanese Garden and is shaded by trees. The 2nd location is beside the greenhouse and has no shade though the 3 tables each have an umbrella. Picnic tables are available on a first-come, first-served basis.
There are other smaller groups of tables and chairs located around the property that are also available for use on a first come first served basis.