Art Instruction

GOING VIRTUAL with Botanical Art classes!

FALL LEAVES: a virtual workshop

Marin Art & Garden Center – Friday, November – 7th from 1 to 3pm

Learn the basic techniques for creating a botanical painting. This 2-hour workshop will be an exchange of demonstrations and exercises designed to promote your understanding of how to develop a botanical painting. Have a fall leaf ready at hand for the class. Sally Petru will guide you through measuring and drawing your leaf onto watercolor paper followed by the application of watercolor from wet to dry brush. All levels are welcome. A materials list will be provided.

To register go to this link:


As we navigate teaching during the pandemic – offerings may change. I am available to teach group sessions. These can be set weekly or alternate weeks. I am currently teaching a themed workshop the first Thursday of each month from 2-3pm. I then follow up 2 weeks later to review student work. You may form your own group, join my continuing students or set up a private session.

Group Rate (3 or more) $20 per hour

If you are new to Botanical Art and wish to learn more, contact Sally.



Introduction to Botanical Art in Watercolor @ SF Botanical Garden

DATES: February 9 – May 2 & 3 – September 12 & 13

Regular workshops will be held at SFBG. Join me as I continue to teach watercolor techniques as they apply to botanical art. This year I will be announcing themed classes designed to take a deeper dive on narrower subjects. Details will be available soon at

Northern California Society of Botanical Artists presents

Workshop: Leaves – Illuminating Hidden Colors 

Tuesday, October 27, 2020 from 10:00 to 3:00

4th Street Fine Art Studio Gallery – 2000 4th Street, Berkeley, CA

Note: Members of NCalSBA have first priority events


Armed with a Certificate from the Filoli Botanical Art Program, undergraduate studies in horticulture and studio art, and extensive coursework with Botanical Art Masters, I began teaching in 2011.  It has been my pleasure to work with budding artists of all ages, having worked with children from age 6 to adults. The greatest challenge came while teaching child, parent, and grandparent in one workshop at the UC Berkeley Botanical Gardens. What a delight to see this kind of collaboration. Whether the instruction is private or group, I can tailor your lessons to fit your needs.

I gladly open my home studio, located off of my garden, for private or group instruction. Interested students may assemble their own groups or join ongoing classes. Workshops may also be coordinated either in the home studio or elsewhere.


My botanical art classes with Sally opened the door to that which previously was a mystery:   “How do they do that?”   In a process that initially seemed almost too daunting for this novice, Sally’s patient and enthusiastic teaching style encourages me at every step, challenges me to really see what I am looking at, and gives me the tools and techniques to translate those visions into paintings I can be proud of.   And I get to have fun, in the process, too!  Thank you, Sally!

Contact me for more information.