May 20th 2019 and in December it's open two times a year the small fee that goes back into the Queen Anne. And the whole Restoration committee is made up of volunteer docents and it's only open twice a year from 10 to 3 go early lines are not that long! regular admission to the Arboretum is also necessary so make sure you spend a full day enjoying the outdoors:)
There are only tours during the Christmas season
Thanks! Your answer is awaiting moderation.