Nurturer (noun)

1. A person who cares for and supports the growth and development of another person or thing.
2. A person who provides nourishment and support, especially in the form of care and education.
3. A person who promotes the growth and development of another person or thing by providing care, education, and support.

Origin:

From nurture + -er.

Examples:

1. She was a natural nurturer and always put others' needs before her own.
2. He was a good nurturer and helped his children grow into responsible adults.
3. She was a nurturer of young minds as a teacher.
4. The nurturer provided the plants with the necessary water and sunlight.
5. The mother was a loving nurturer to her children.