Make Bigger Impact
By joining the Thornhill Society, the Arboretum’s annual leadership giving society, you elevate the impact of the Arboretum to create a greener, healthier, and more beautiful world where people and trees thrive together.
Unlimited visits for up to 10 individuals age 4 and older at a time, free of charge. Partner-level members demonstrate their commitment to the Arboretum’s mission, providing the investment to create a greener, healthier, more beautiful world where people and trees thrive together.
Partner Membership
$500 per year
One-year membership
In addition to the member benefits
listed below.
Acorn Express tram tour vouchers
at the Ginkgo Restaurant and Café
at The Arboretum Store
for Summer Science Camps
for select private and public events
to special donor events
of your support in the Perennial Report
to Greenmatters, the donor newsletter
All memberships also enjoy the following benefits:
by showing your physical or digital membership card at the gatehouse
630-719-2453
to More Than A Walk In The Woods e-newsletter
at the Sterling Morton Library
at more than 360 arboreta and botanical gardens across North America
on snowshoe and cross-country skis (subject to availability)
from 7:00 a.m. to 9:00 a.m. daily, members have exclusive access to the grounds
Earn points toward a free small drink or pastry with every visit
By joining the Thornhill Society, the Arboretum’s annual leadership giving society, you elevate the impact of the Arboretum to create a greener, healthier, and more beautiful world where people and trees thrive together.