Northwest Flower and Garden Show, Seattle, WA
February 18 – 22, 2026
Catch me at the Grow it From Home booth for the first ever Cannabis seeds and gardening booth! I’ll be there ready to sign books & teach mini-sessions on growing cannabis in the garden.

Marin Garden Club
March 10, 2026
Growing Cannabis in the Garden

Morningsun Herb Farm
March 28, 2026
Join me and Emily Gogol as we teach you everything you need to know to grow healthy cannabis in the garden. Grow it From Home seeds and my book The Cannabis Gardener will be on sale.

Nov ’25

6-8 pm

Herbal Magic Finale!

Kitchen Alchemy with Herbs and Cannabis
Thursday November 13, 6pm – 8 pm

Join Penny and Stefani in the kitchen as we use the bounty of the garden in bespoke creations in the kitchen. This is what the summer herb garden was heading for all season! We become kitchen alchemists as we transform our harvested herbs into tisane, tincture, infused oil, salve, and delicious beverages and edibles. Penny will offer instruction on the unique properties of cannabis for health and wellness as we include it in the herbal ingredients in our creations. Come prepared to learn by doing as we make several favorite herbal recipes for mind, body and soul.

Nov ’25

1 pm

Berkeley Herbal Center

Craft Your Own Herbal Mints: THC, CBD & Beyond

Join Penny Barthel and Dr. Emily Gogol at Berkeley Herbal Center for a fun and informative workshop where you’ll craft your very own herbal mints!

This class is a great opportunity to create delicious, custom edibles and learn how to properly dose THC, CBD or THCA. You will also have all your cannabis questions answered by our expert instructor Emily Gogol. Whether you’re a newbie or an experienced user, this workshop is a perfect blend of creativity, education, and fun! You’ll make a fresh batch of mints during the class which you will take home to dry in your new candy mold.

Berkeley Herbal Center. 1250 Addison Street, Ste. G, Berkeley, CA 94702

Sept ’25

11 am

Westbrae Nursery

Harvest Workshop Saturday September 13, 2025 11 am – 12 noon

Join Penny Barthel at Westbrae Nursery in Berkeley, CA! She’ll teach practical advice on harvesting and enjoying your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest. We’ll share tips on knowing when to harvest and how to trim, dry, cure and store your home grow.

Westbrae Nursery 1272 Gilman Street, Berkeley, CA 94706

Sept ’25

1 pm
&
3pm

LA • LatinX with Plants

Cannabis Garden Club Sunday September 7, 1 pm – 3pm
Harvest Workshop Sunday September 7, 3 pm – 4 pm

Join Penny Barthel at LatinX with Plants! The Cannabis Garden Club is a free drop in social time from 1 pm to 3 pm. Immediately following we will teach a Harvest Class. We’ll teach practical advice on harvesting and enjoying your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest. We’ll share tips on knowing when to harvest and how to trim, dry, cure and store your home grow.

Click here to purchase ticket for the 3pm Harvest Class $10 per ticket

Sept ’25

11 am

LA • Creatures Coffee & Plants

Cannabis Harvest Workshop
Sunday September 7, 11 am to 12 pm

Join Penny Barthel at Creature’s Coffee & Plants! Join us to get practical advice on harvesting and enjoying your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest. We’ll share tips on knowing when to harvest and how to trim, dry, cure and store your home grow.

Sept ’25

11 am

LA • Fig Earth Supply

Cannabis Harvest Workshop
Saturday September 6, 11 am to 12 pm

Join Penny Barthel here at Fig Earth Supply to learn practical advice on harvesting Cannabis from your garden. This workshop will cover what to do as the plants develop over summer, when and how to use the vegetative parts (e.g. green smoothies), and how to have a successful and fun harvest. Penny is here to answer your questions with sound advice based on years of gardening experience and will bring a variety of ‘show and tell’ items to demonstrate how to successfully grow and enjoy at home.

$15 per ticket
Registration required – sign up soon!

Sept ’25

12:30 pm

Herbal Magic

Harvesting Excellence: Final Care for Herbs and Cannabis
Tuesday September 2, 12:30 pm to 2:30 pm

This hands-on course is designed for gardeners who want to master the final stages of the growing cycle, ensuring that their herbs and cannabis are harvested and processed with precision and care. In this comprehensive class, you will learn: Seasonal Reflections, Timing Your Harvest, Harvesting Techniques, Trimming and Processing, Drying and Curing, Final Garden Care, Storage and Preservation

24th

Aug ’25

2 pm

Harvesting Cannabis in Your Garden
San Francisco Botanical Garden

Join me for a class covering all you’ll need to harvest, dry, cure and store your OWN cannabis in your garden. I will share wisdom and expert tips to help you make the most of your growing situation, whether in a pot or in the ground. My book, The Cannabis Gardener, and Emily’s stellar seeds from Grow it From Home will be available for purchase. Please click here to purchase your ticket!

San Francisco Botanical Garden — Fragrance Garden

17th

Aug ’25

Community Health Day

Join us Sunday, August 17th for our second annual Community Health Day: The Art of Collective Healing!

I will be here with Emily Gogol to get to know you, and answer questions about growing cannabis in your garden! Bring you photos, curiosity, and questions and join us at this magical, free community event.

August 17th 11:30 – 5:00pm Strawberry Creek Park

16th

Aug ’25

Harvesting Cannabis in Your Backyard
11 am Dublin • 3 pm Cupertino

Join me for a class covering all you’ll need to harvest your OWN cannabis in your garden. Emily Gogol, PhD and I share our wisdom and expert tips to help you understand when your cannabis is ready to harvest, how to trim, dry, cure and store your bud. My book, The Cannabis Gardener, and Emily’s stellar seeds from Grow it From Home will be available for purchase.

11am Dublin location: 7360 San Ramon Road, Dublin, CA 94568
3pm Cupertino location: 1491 S De Anza Blvd, Cupertino, CA 95014

7th

June ’25

11 am

Growing Cannabis in Your Garden
San Francisco Botanical Garden

Join me for a class covering all you’ll need to grow your OWN cannabis in your garden. Emily Gogol, PhD and I share our wisdom and expert tips to help you make the most of your growing situation, whether in a pot or in the ground. My book, The Cannabis Gardener, and Emily’s stellar seeds from Grow it From Home will be available for purchase. Please click here to purchase your ticket!

San Francisco Botanical Garden — Library Terrace

7th

June ’25

4 pm

Growing Cannabis in Your Garden
Summerwinds Nursery, Campbell

Join me for a class covering all you’ll need to grow your OWN cannabis in your garden. Emily Gogol, PhD and I share our wisdom and expert tips to help you make the most of your growing situation, whether in a pot or in the ground. My book, The Cannabis Gardener, and Emily’s stellar seeds from Grow it From Home will be available for purchase.

Summerwinds Nursery, 2460 S Winchester Blvd, Campbell, CA

6th

June ’25

4:20 pm

LIVE Q&A on Homegrowers International

Join me for a conversation and LIVE Q&A on Substack! I’ll be joining Michel Navedo on his site just for Home growers. It’s wonderful to have a place for gardeners to share wisdom about growing cannabis at home. Bring your questions and meet me online on Friday!

May ’25

Herbal Magic

Summer Herbs & Cannabis: Companion Planting and Care
Thursday May 22, 12:30pm to 2:30pm

Join Stefani Bittner and Penny Barthel in a four class series on growing culinary and medicinal herbs, including cannabis, in the garden. These two master plantswomen and expert gardeners will take you through every season in the herb garden, from seed planting to salve making and every step in between. While each class is a complete experience, we recommend that you sign up for the series to gain the fullest mastery of your herb garden. Click here for more details and to register.

May ’25

Join Penny Barthel at a Pop-Up at the new Flowerland Nursery Barn! Cannabis educator and author Penny Barthel will be ready to greet you and answer your questions about growing cannabis in the garden. The Cannabis Gardener (Ten Speed) will be available for purchase. NEW excellent quality seeds from Grow it From Home for sale.

3rd

May ’25

May 3 Bay Area classes

Join me this weekend at one of our FREE one hour classes on How to Grow Cannabis in the Garden. Emily Gogol or Grow it From Home and I offer expertise instruction on how YOU can grow your own cannabis outside in your garden or patio.

5/3 11 am – 12 pm Summerwinds Nursery Dublin, 7360 San Ramon Road, Dublin, CA

5/3 1 pm – 2 pm Evergreen Nursery, 350 San Leandro Blvd, San Leandro, CA

5/3 3:30 pm – 4:30 pm Summerwinds Nursery Cupertino, 1491 S De Anza Blvd, Cupertino, CA

This is a perfect class for anyone who is curious about gardening with cannabis. Emily Gogol and I co-teach and answer all your questions. No need to be a gardener, or have a garden – cannabis is perfectly happen in a container. After the class there will be a Pop-Up sale of my book, The Cannabis Gardener and new crop of seeds from Grow it From Home. All are welcome – bring a friend!

Apr ’25

Herbal Magic

April 10 12:30 pm – 2:30 pm Herb & Cannabis Garden Foundations: Soil, Site, and Seeding

Join Stefani Bittner and Penny Barthel in a four class series on growing culinary and medicinal herbs, including cannabis, in the garden. These two master plantswomen and expert gardeners will take you through every season in the herb garden, from seed planting to salve making and every step in between. While each class is a complete experience, we recommend that you sign up for the series to gain the fullest mastery of your herb garden. Click here for more details and to register.

5th & 6th

Apr ’25

East Bay classes

Join me this weekend at one of our FREE one hour classes on How to Grow Cannabis in the Garden.

4/5 11 am Flowerland Nursery

4/5 2 pm Westbrae Nursery

4/6 11 am Berkeley Hort

4/6 1 pm Gardening with Medicinal Herbs at Evergreen Nursery

This is a perfect class for anyone who is curious about gardening with cannabis. Emily Gogol and I co-teach and answer all your questions. No need to be a gardener, or have a garden – cannabis is perfectly happen in a container. After the class there will be a Pop-Up sale of my book, The Cannabis Gardener and new crop of seeds from Grow it From Home. All are welcome – bring a friend!

30th

Mar ’25

1:30 pm

Seed Party + Workshop

Join me for a three hour hang and sesh. You’ll get to make seed bombs, chat with cannabis gardening expert Emily Gogol and myself, and meet fellow cannabis enthusiasts at this beatiful, spacious garden shop. 1:30 pm to 4:30 pm at Creature’s Plants & Coffee in LA

30th

Mar ’25

11 am

Growing Cannabis in the Garden

Join me for a class covering all you’ll need to grow your OWN cannabis in your garden. Emily Gogol, PhD and I share our wisdom and expert tips to help you make the most of your growing situation, whether in a pot or in the ground. My book, The Cannabis Gardener, and Emily’s stellar seeds from Grow if From Home will be available for purchase. Flora Grubb LA, 13198 Mindanao Way, Marina del Rey, CA 90292

29th

Mar ’25

1 pm

Growing Cannabis in the Garden

Join me for a class covering all you’ll need to grow your OWN cannabis in your garden. Emily Gogol, PhD and I share our wisdom and expert tips to help you make the most of your growing situation, whether in a pot or in the ground. My book, The Cannabis Gardener, and Emily’s stellar seeds from Grow if From Home will be available for purchase. Tansy Shop, 2120 W. Magnolia Blvd, Burbank, CA 91506

22nd & 23rd

Mar ’25

Gardening with Medicinal Herbs

I’ll be on a FIVE class teaching blitz with Emily Gogol of Grow it From Home this weekend. I’ll be selling and signing my book, The Cannabis Gardener! FREE classes, please bring friends. We are teaching at all Summer Winds Nursery locations throughout the bay area. Click here to register — spaces are limited!

3/22 10 am Novato, CA 1430 S. Novato Blvd
3/22 2pm Dublin, CA 7360 San Ramon Road
3/23 10 am Campbell, CA. 2460 S. Winchester Blvd
3/23 12:30 Cupertino, CA 1491 S De Anza Blvd
3/23 3 pm Palo Alto, CA. 725 San Antonio Road

16th

Mar ’25

1:00 pm
to
2:30 pm

Workshop: How to Grow Outside at Home

Are you ready to grow your own cannabis? 

In this workshop, we cover everything a canna-curious green thumb needs to know to grow cannabis outside, in the sunshine. We will show you how to prepare seeds for planting, how to transplant seedlings, and best places to plant your cannabis plant. We will give you plenty of tips on how to take care of your green babies as they grow throughout the Summer.

We’ve restructured our prices, allowing for many options and reducing the price for the workshop to just $25. During the workshop there will be time to purchase a copy of The Cannabis Gardener and high-quality feminized seeds!

Location in the East Bay will be sent to attendees the day before the event.

NEW lower price: $25 Register here.

1st

Mar ’25

1pm PT/
4pm ET

The Great Grow Along

I’m honored and delighted to be a featured presenter at The Great Grow Along online garden show. This is an online global expo connecting and inspiring gardeners with the best curated cutting edge content. Please register for my session soon! It is FREE and open to all! Special offers from Grow It From Home and Humboldt Seed Company for all who attend this 45 minute online session. I’ll be there in real time to answer questions and connect with the folks in the session. Please tell your friends anywhere in the world!

Be Our Valentine

A special NEW LUXE class devoted to perfectly dosed chocolates. In this friendly and informative hands-on workshop we will learn which cannabinoids are best for you, how and when to enjoy them, and what effects to expect. Then we move into the kitchen to make our very own little custom infused chocolate hearts. This is a luxe workshop with all equipment and supplies included.  Each participant will leave with a jar of bespoke infused chocolates and key equipment needed to make more hearts at home.

Thursday February 13, 7:00 pm to 8:00 pm

Kitchen Craft

In this delightful, hands-on workshop, you will learn how to make customized tincture, topicals and edibles with home-grown cannabis.

Book Sales at Art Attack

Come see me at Art Attack! 3pm to 7pm Friday October 18, 2024 at Westbrae Nursery in Berkeley. I’ll be selling copies of The Cannabis Gardener and also offering my fan-favorite Magic Salve for a donation to The Last Prisoner Project. Lots of other fine local authors and artists on hand as well. AND a Pumpkin Patch! Hope to see you there.

Harvest Workshop

The venerable Berkeley Horticultural Nursery is hosting this one hour workshop on how to harvest, trim, dry, and store your homegrown cannabis. FREE and open to all.

Harvesting

Join us to get practical advice on harvesting and enjoying your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest.

Harvesting in Your Garden

Join us to get practical advice on harvesting and enjoying your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest.

Harvesting in the Garden

Join us to get practical advice on harvesting and enjoying your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest.

Harvest Workshop

Join us to get practical advice on harvesting and enjoying your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest.

Infused Chocolates

A special NEW LUXE class devoted to perfectly dosed chocolates. In this friendly and informative hands-on workshop we will learn which cannabinoids are best for you, how and when to enjoy them, and what effects to expect.

Growing Cannabis

Join us to get practical advice on growing your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest.

Growing in the Garden

Join us to get practical advice on growing and enjoying your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest.

Cannabis Gardening

Join us to get practical advice on growing and enjoying your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest.

Growing in the Garden

Join us to get practical advice on growing and enjoying your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest.

How to Grow Outside

Are you ready to grow your own cannabis? In this workshop, we cover everything a canna-curious green thumb needs to know to grow cannabis outside, in the sunshine. We will show you how to prepare seeds for planting, how to transplant seedlings, and best places to plant your cannabis plant.

Growing in the Garden

Join us to get practical advice on growing and enjoying your Cannabis at home. Whether you call it hemp or marijuana, enjoy THC and/or CBD, these are incredibly useful plants that you can enjoy throughout the summer and into harvest.

Growing in the Garden

Emily Gogol & Penny Barthel return to the nursery to share their practical advice on harvesting cannabis plants from your garden. Bring your questions and hear their wisdom based on years of experience. This session will feature a variety of demonstration items to show you how to process and enjoy your harvest at home.

Growing in the Garden

Emily Gogol & Penny Barthel return to the nursery to share their practical advice on harvesting cannabis plants from your garden. Bring your questions and hear their wisdom based on years of experience. This session will feature a variety of demonstration items to show you how to process and enjoy your harvest at home.

Cannabis 101

My Wondering About Weed co-Founder Kaisha and I will be teaching Cannabis 101 at the North Branch of the Berkeley Public Library on February 21.

Growing in the Garden

Emily Gogol & Penny Barthel return to the nursery to share their practical advice on harvesting cannabis plants from your garden. Bring your questions and hear their wisdom based on years of experience. This session will feature a variety of demonstration items to show you how to process and enjoy your harvest at home.

From Seed to Sesh

Wondering About Weed’s annual Harvest class was a special one. We gathered, talked, shared our questions, then developed our Cannavision by looking deep into the structures in the ripening bud.

The Cannabis Gardener

Please join me June 10 for a free event. We’ll meet at Flowerland Nursery in Albany at 1:00 pm for a mini-seminar on How to Grow Cannabis in the Garden. We’re back by popular demand, and Flowerland will be selling cannabis seeds, grow bags, copies of The Cannabis Gardener, and anything else you’ll need to succeed at growing your own.

SF Botanical Garden

Learn how to grow cannabis in your garden! Penny Barthel, author of “The Cannabis Gardener”, will teach new and experienced gardeners alike all about this fascinating, easy to grow plant. We’ll explore everything a canna-curious greenthumb needs to know to grow cannabis outside, in the sunshine, at home.

Cannabis in the Garden

Please join me June 10 for a free event. We’ll meet at Flowerland Nursery in Albany at 1:00 pm for a mini-seminar on How to Grow Cannabis in the Garden. We’re back by popular demand, and Flowerland will be selling cannabis seeds, grow bags, copies of The Cannabis Gardener, and anything else you’ll need to succeed at growing your own.

Spring Workshop

Join me at Wondering About Weed’s signature Spring workshop!

Growing Cannabis

Please join me April 16 for a free event. We’ll meet at Flowerland Nursery in Albany at 1:00 pm for a mini-seminar on How to Grow Cannabis in the Garden. We’re back by popular demand, and Flowerland will be selling cannabis seeds, grow bags, copies of The Cannabis Gardener, and anything else you’ll need to succeed at growing your own.

Growing Cannabis

Please join me at Berkeley Horticultural Nursery on Saturday April 15, 2023 at noon. I’ll be sharing some key information to help you grow cannabis in your own garden at home. My book, The Cannabis Gardener, will be for sale. AND Emily Gogol from Grow It From Home will be in attendance as well.