Stay together friends. Don't scatter and sleep.

Our friendship is made of being awake. -- Rumi

To study the Way is to study the self. To study the self is to forget the self.

To forget the self is to be enlightened by all things. To be enlightened by all things

is to remove the barriers between one's self and others. --Dogen Zenji


 Welcome to Silver Spring Zendo/One Heart Sangha


Sensei Bob Jin Gen Ertman
Sensei Bill Ji An Dietrich
Sensei Rose Mary Myoan Dougherty

The One Heart Sangha is a multifaith community of Zen students who sit together on a regular basis to support one another in staying awake, moment-by-moment, to see and live our true nature, our at-one-ment with all.  One Heart Sangha exists to support the ongoing practice and compassionate presentce of its members. Our lineage is that of the White Plum Asanga which was established by Taizan Maezumi Roshi and draws heavily on the teachings of the Soto School of Zen, founded by Dogen Zenji in the 13th century.

Silver Spring Zendo/One Heart Sangha is a non-profit organization. We ascribe to the White Plum Asanga Code of Ethical Conduct.

We are affiliated with the Zen Peacemakers Sangha, founded by Roshi Bernie Glassman. Its members are individuals, groups and organizations dedicated to realizing and actualizing the interconnectedness of life.


Fall Sesshin: Wednesday evening August 31 - Sunday lunch September 4
Winter Sesshin: Friday evening January 6 - Sunday lunch January 8

"In its fullness, it is the total movement of awakening.
Of ending the cycle of travail and going beyond to wisdom and heart in daily life."

Please see information under Retreats.

To register for any events, or if you wish to contact the sangha, please email:



Sensei Bob Jin Gen Ertman

Sensei Bob Jin Gen Ertman is a dharma heir of Rose Mary Myoan Dougherty, Sensei, and a long-time member of the Silver Spring Zendo/One Heart Sangha.  He is currently serving as the guiding teacher for the sangha. He is also a member off the Zen Peacemakers and is grateful for the way it has shaped his practice in all of life. He writes and teaches haiku as a practice of being fully in the present moment. He received the precepts at Boundless Way Zen from James Ford, David Rynick, & Melissa Backer.  Bob is a retired federal attorney and lives in Annapolis with his wife, Phyllis.  Together they are facilitators of a Mndfulness Practice Group at the Unitarian Universalist Church of Annapolis. In his spare time, Bob collects fossils, with his daughter Hallie when he can (They began when she was 4--she's 28 now).

Sensei Bill Ji An Dietrich is one of the founding members of Silver Spring Zendo/One Heart Sangha. He is a dharma heir of Rose Mary Myoan Dougherty, Sensei, and previously studied under Janet Jinne Richardson, Roshi, and Rosalie Jishin McQuaide, Sensei. He is the former executive director of the Shalem Institute for Spiritual Formation, an ecumenical institute for contemplative spirituality. He has offered numerous contemplative programs and retreats as well as spiritual guidance in interfaith settings for over 20 years. Bill has completed the Metta Institute's End of Life Care Practitioner Program, where he studied with mindfulness teachers Frank Ostaseski and Ange Stevens, and with Zoketsu Norman Fischer, Sensei. He currently devotes much of his time to end of life care and is an active hospice volunteer patient visitor and chaplain. He also co-directs Companioning the Dying: Opening Fully to Living, a program of formation and support for those engaged in end of life care. Bill is a member of Bethesda Friends Meeting of the Religious Society of Friends (Quakers). He previously had a long career in business and has served since 1986 on the board of trustees of the Ariel Investment Trust, a series of socially responsible mutual funds. He moving to Bethany Beach, DE in late spring of 2016 and will continue to teach at sesshins as he is able.

Sensei Rose Mary Myoan Dougherty is the sangha's first guiding teacher and founder of One Heart Sangha/Silver Spring Zendo. She is a member of an international community of vowed religious women whose call today is to hear the cries of the earth and its people and respond compassionately. She has offered workshops, retreats, and spiritual guidance in the contemplative tradition in interfaith settings for over thirty years. She began her Zen studies with Charlotte Joko Beck and is dharma heir of Janet Jinne Richardson Roshi. She completed the End of Life Counseling Program at Metta Institute in California. She volunteers at a hospice for the homeless in Washington, D.C., and offers retreats and workshops for hospice caregivers, especially through the program "Companioning the Dying: Opening Fully to Living," which she co-directs.  As a sensei, she teaches Zen meditation in Silver Spring, Maryland, and in other settings.