Cannabis Author and Educator

“Penny Barthel strikes the perfect blend of science and beauty in this most approachable guide to growing cannabis in the garden. Your hand will be held from start to glorious (vanilla bean-infused gummy) finish.”
Johanna Silver, author of Growing Weed in the Garden

Book

Ten Speed Press/2021

Purchase here

The Cannabis Gardener teaches you how to choose which strains are right for you and how to cultivate the plants from seed to finished flower. Gorgeous full-color photographs capture each stage of the growing process and show how cannabis plants can be incorporated into your garden design as well as raised beds and containers. After you establish your plants in the garden and monitor them through the flowering stage, you’ll find tips on how to harvest, dry, cure, and store your “grow.” Also included are recipes for savoring your harvest, from salves, tisanes, and tinctures to cannabutter for baking and cooking delicious treats such as CBD gummies flavored with vanilla beans, cheddar crackers, and even cannabis chocolate sauce.

The Cannabis Gardener is an accessible and practical guide for any level of gardener interested in growing their own attractive cannabis plants.

Special Event

September 2026

U-Pick Hemp
Sonoma Hills Farm

Please join me at Sonoma Hills Farm in the Petaluma Gap to pick your own hemp plant! This is the first time that Northern California’s premier cannabis farm has offered this experience. I’ll be there to teach how to trim, dry, cure, store, and enjoy your hand harvested hemp, and to sell and sign my book, The Cannabis Gardener.

CBD, CBDV, and CBG varieties are available. This event is likely to sell out quickly.

Scan the code to sign up. All equipment will be provided. See you there!

Sonoma Hills Farm
250 Purvine Road, Petaluma, CA 94952

New Article

New for the backyard herb garden: cannabis

Martha Ross of the Bay Area News Group wrote a really nice article, featured in the San Jose Mercury News and in the Backyard Magazine in the SF Chronicle and East Bay Times. “East Bay educator, gardener, foodie and author Penny Barthel wants everyone to be able to grow cannabis in their backyards — because it’s fun and because they can put the plant to use in a variety of ways.” Read more . . .


“If plants have IQ, cannabis is a genius. This lovely and practical book gracefully describes how to cultivate, support, encourage, and manifest the genius of this remarkable plant.”


David E. Presti, professor of neurobiology and psychology, University of California, Berkeley