Obadiah Hadwen

Obadiah Brown Hadwen (August 2, 1824 – 1907) was a horticulturist active in Worcester, Massachusetts.

Hadwen was born in Providence, Rhode Island and spent four years at Moses Brown School, then a further four years at the Clinton Grove Institute and one term's instruction at the Worcester County Manual Labor School.

In 1844, while still a minor, he became owner of a farm in Worcester, which he improved and enlarged over the years.

Hadwen bequeathed his arboretum to Clark University for the sole purpose of education, with the following words: "Said estate to be forever kept for the purpose of educating students in Agricultural, Historical, and Arboreal knowledge scientific and practical.

I adopt this course with the purpose in view of preserving the trees and plants growing thereon, being a portion of my life work, shall be preserved as an Arboretum, and an object lesson to assist students in the education of the science and art of Arboriculture and improving the landscape."