The Mental Health Nurse Education Department, also known as TREE, offers a range of education to staff from Peninsula Health or external organisations.

Courses offered by TREE include:
- Introduction to Mental Health
- Applied Suicide Intervention Skills Training (ASIST)
- Risk identification, Safety, Containment, Environment (RiSCE)
- Skill development courses
- Core mandatory training
- Professional development related course
A number of these courses have a cost applied to them.
Enquiries regarding Mental Health Nurse Education can be directed to Diane Heenan (Administrative Assistant) dheenan@phcn.vic.gov.au (03) 9784 8236.