Goldenrod: of the Solidago genus, meaning “to heal” or “to make whole.”
Truly a fitting attribution for this diverse, charismatic, and resilient plant. With over 100 species nationwide, upwards of 30 goldenrod species call Pennsylvania home, filling niches from cool, shady forests to hot, sunny meadows. While different species bloom across the growing season, most people recognize goldenrod during the transition from summer to fall, when open fields are swept with a giddy shock of golden yellow: a final flush of warm-season splendor fueling pollinators as they prepare for winter.
Beyond its aethetic beauty and wildlife value, goldenrod can provide a bounty for people, too. In this class, we’ll dig into the many ways that interacting with goldenrod–especially the “weediest” species–can bring healing and wholeness to our lives:
Foraging & Medicine-Making
In the first part of this class, we’ll become acquainted with goldenrod as a source of food, wellbeing, and ecological understanding. We’ll encounter plants in the field to practice identification, species differentiation, ethical harvest, and preparing medicine. In the transition between this portion of class and the second half, we will enjoy lunch along with freshly-brewed goldenrod tea.

Botanical Dyeing
For the second part of this class, we’ll be joined by botanical dye artist Chelsea Thompson of earthencolor to transform gathered goldenrod into wearable colors. Chelsea will cover the foundations of using local blooms to dye natural fibers. You will get to dye two take-home items in the class using the shibori (tie-dye) and bundle-dying methods.


You’ll leave not just with newly-colored clothes and a brightened appreciation for Solidago, but with inspiration and skills for incorporating this generous plant into your life!
Program Schedule:
11am - 1pm | Goldenrod in the field: ID, ecology, and foraging
1-1:30pm | Lunch Break
1:30-4pm | Crafting with goldrenrod: botanical dyes from leaves and flowers
What to Bring
- Refillable water bottle
- Packed lunch and snacks as preferred
- Pad and pencil for notetaking
- Box, bucket, bag, or other carrying item for taking home dyed fabrics (may still be moist at the end of class)
- Optional: Basket for take-home harvest
- Optional: Up to two items to dye in class. See details below:
- Basket for take-home harvest (optional)
In-Class Dye Projects
When registering, you can opt to bring your own dye item(s) or purchase up to two add-ons that will be ordered on your behalf. NOTE our September 13th deadline for ordering dye items.
I want to bring my own items to dye
Instead of ordering dye item(s) at registration, you may bring up to two articles of clothing or cloth suitable for natural dyeing. Items must be of a reasonable size and lightness, and composed of natural fibers (cotton, linen, silk, etc.). If you are unsure about whether an item is suitable, you can reach out to Chelsea Thompson at chelsea@earthencolor.com.
- Examples of items to consider bringing: t-shirts, bandanas, socks, pillow-cases, tea towels
- Examples of items NOT to bring: anything bulky like jeans or jackets, sheets, or anything made of synthetic fiber
The Horn Farm's Bonfire store now offers white short-sleeve and long-sleeve shirts with our botanical Remembering Our Roots design. Order one to be shipped to you and bring it to class for a truly unique dye project!
I want to order items to dye
At registration, you'll have the option to order up to two items for dyeing in class. Options include a blank cotton bandana, bamboo socks, and a cotton tote. You are also welcome to reserve one item through registration, and bring another of your own.
Add-on orders are available up to two weeks before the class, so make sure to register by Sunday, September 13th to redeem this option.
Items purchased at registration will be provided for you on the day of the class.
I want the coolest dye project out there
We've got you covered! The Horn Farm's Bonfire store now includes white short-sleeve and long-sleeve shirts with our botanical Remembering Our Roots design. Purchase one to be shipped to you and bring it to class for your dye project! Every shirt sold supports educational programs and regenerative land stewardship at the Horn Farm.
Click here to purchase a Remembering Our Roots tee!

Program Notes:
Environment: This class will take place partially outdoors. Please check the weather in advance and dress accordingly. Be prepared for walking in an exposed meadow environment with possible muddy conditions.
Arrival: Parking takes place in the field above the farmhouse. Plan to arrive 10 minutes early so we can begin each class on time. More details about parking will be communicated in a reminder email days before the program. We'll begin this class by meeting in the farmhouse.
Audience: Children under 12 may attend for free if accompanied by a registering adult. Please note that 1) adults with children are still limited to two dye items, and 2) this program is primarily designed for adult engagement. Attendees between 13 and 17 must be registered separately and accompanied by a registering adult.
Cost: The standard cost for this program is $63/person, not including add-on dye items. Sliding scale options are available to increase accessibility. Each dye item adds $7 to your registration. NOTE that the option to purchase items for dyeing in class expires on Sunday, September 13th.
Cancellation: All programs are subject to change due to unforeseen circumstances including inclement weather. Participants will receive an email in the days preceding the program for any changes or cancellations. You can review our current Cancellation and Refund Policy here.
About the Instructors:

Andrew Leahy
Growing up in a rural town called Sweet Valley, just south of Ricketts Glen, Andrew spent his life fostering a love for the PA wilds. He attended Muhlenberg College in Allentown and majored in English Literature and Music Composition while exploring regional ecology, slow food, composting, gardening, and foraging in the spaces between. This eventually led him to the staff of the Horn Farm Center, where, as Community Engagement Coordinator, he organizes educational opportunities, coordinates volunteers, runs social media, blogs, and assists with development and outreach projects.
Andrew is an avid forager and student of wild spaces, interested in rekindling ways of living on the landscape that are place-sourced and mutually nuturing. In 2023, he had the privilege of enriching his experience by taking the Horn Farm Center's Land Steward Training Program. Beyond the Horn Farm, Andrew leads a book club for the Lancaster Composting Co-Ops, volunteers as a land steward with the Lancaster Conservancy, and spends Saturdays selling produce at Green Circle Organics in Lancaster Central Market.

Chelsea Thompson
Chelsea Thompson is a textile artist focusing on the use of plant dyes as a way to explore and strengthen a relationship with the natural world. Growing up on a horse farm has lead her to be endlessly inspired by the slow process and nuances of nature. She has fibers degree from Savannah College of Art and Design, where a creative vision was born through the project Earthencolor. With the use of botanical dyes, Earthencolor aims to convey a story through bespoke garments, accessories, and home goods. As a part of an ethos in using natural dyes, there is a belief that the colors processed from plants are synonymous to a life harmonious with the outdoors; each color yielded is unique in a life and story of its own, continuous of its former physical state.
Learn more about Chelsea's work at earthencolor.com. She can also be found on Instagram at @_earthencolor_
York, PA 17406
United States
| Class Fee | |
| Tier 1 (regular admission) | $63.00 |
| Tier 2 (reduced cost) | $52.00 |
| Tier 3 (pay-it-forward) | $74.00 |
| Dye Project | |
| Cotton Bandana | $7.00 |
| Cotton Tote | $7.00 |
| Bamboo Socks | $7.00 |
| I'll bring my own item or items to dye | $0.00 |