Arbor Day in Hawaii (various sites/times) Many Tree Adoptions
See: https://arbordayhawaii.org/Check here for details: https://dlnr.hawaii.gov/forestry/lap/kaulunani/arbor-day-in-hawaii/
Check here for details: https://dlnr.hawaii.gov/forestry/lap/kaulunani/arbor-day-in-hawaii/