He is a real Johnny Appleseed who always helps his neighbors.
Johnny Appleseed
idiomA person, usually a male, who is generous, nurturing, and dedicated to positivity and helping others.
Origin
After the American pioneer nurseryman Johnny Appleseed (1774–1845).
Our community garden thrives because of Sarah's brother, a true Johnny Appleseed who spends his weekends teaching kids how to grow vegetables.
Throughout his long life, the retired teacher acted as a local Johnny Appleseed, quietly planting seeds of knowledge and encouragement in every student he encountered.