We are a small community of Zen practitioners based in Rancho Penasquitos, San Diego County. We meet every week for zazen practice and hold meditation retreats four times a year. We are part of the White Plum Asangha.

Regular Schedule

We meet every Monday evening in Rancho Penasquitos to sit zazen together. The schedule varies a little each week, so check the calendar and schedule page for more information. Some weeks are better than others for beginners to attend for the first time, so be sure to check the schedule before making plans. We also ask for newcomers to email us for driving directions to the Rancho Penasquitos address.


We hold a small number of sesshin, or intensive silent meditation retreats, every year. Sesshin is part of the core syllabus that students follow as part of the Three Treasures Zen Community. It is a chance to study our how our minds work in a silent and peaceful setting. Often during sesshin, we will use Practice of Immediacy in the Arts® techniques alongside zazen.

To find out about our retreats and to book up, please visit our calendar and schedule page.


The Three Treasures Zen Community is led by three teachers: Barry Kaigen McMahon Roshi, Nicolee Jikyo McMahon Roshi and Annie Purna Pirruccello Sensei. Between the three teachers, there is a wealth of spiritual and life experience that provides a solid base for the community.