Members are the lifeblood of our organization. If you're not already a member, please consider signing up today. You can select the membership level that fits your needs below.
Bear in mind that as from July 1, 2023, 10% of your membership dues will be allocated as a contribution to the Oak Conservation and Research Fund (Life Memberships excluded). The IOS thanks you in advance for supporting our Society as an active conservation organization. Please consider increasing your support by making an additional contribution at any time on our donation page here.