Okaasan no Ki
Type: OVA, Episodes: 1
Aired: 1986
Source: Unknown
Rating: G - All Ages
Synopsis:
Based on a book by Okawa Etsuo.

In 1937 a mother with 7 children has to see her eldest three sons go off to war. She plants Paulownia tree seeds and prays to the trees every day for her sons to come back safely.