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- Canned GoodsFirefly Berries offers many varieties of jam and jelly, as well as 100% Concord grape juice, all canned to last at least a year in your cupboard, or up to two weeks in your refrigerator once opened. At this time, these products are only available for local pick up.
- Fresh ProduceFrom strawberries to grapes to herbs, if you’re looking for fresh produce that we grow on our farm, this is your place to look. All fresh produce is only available for Saturday morning curbside pick up. We do not ship fresh produce.
- Berry Fun Yarns Berry Fun Yarns are dyed naturally, without the use of toxic chemicals. The colors are coaxed out of the beautiful plants and flowers (or even coffee that Grandpa drinks!) that fill the fields of Firefly Berries. We do purchase a small amount (less than 10%) of our dyestuff or natural extracts from trusted U.S. dyestuff companies, as there are a few colors that are we are unable to grow in Minnesota. Dyeing yarn naturally is different than using acid dyes in many ways, but the most striking to the dyer is that naturally dyed yarns are highly sensitive to the pH of the water used both in the dyeing and washing process. A slight change in the pH of the water can yield an entirely different color. Because of this, we recommend handwashing all Berry Fun Yarn in cool or tepid water with a pH neutral soap like Eucalan. Once we dye the yarn, we do wash every hank to assure the dye has both set and is easy for the customer to work with. We also recommend storing your yarn and finished products out of direct sunlight.
  - Advent 2025Inspired by the 1994 Disney movie, The Santa Clause, the 2025 Advent Countdown kit is full of lots of holiday spirit and color.
  - LaceA superfine yarn that is great for lace work. Great for projects that wish to evoke an ethereal or floaty feeling. Laceweight mohair or silk is also wonderful when held double with another yarn to create extra warmth and texture. Most commonly used with size US 000-US 1 (1.5-2.25 mm) knitting needles or a 1.4-2.25 mm crochet hook.
  - FingeringFingering weight yarn is often used for baby items, socks, shawls, and other lightweight accessories and garments. It is approximately twice the weight of a lace yarn, and is typically knit using a US size 1-3 (2.25-3.25 mm) knitting needle or a size B-1 to E-3 (2.25-3.5 mm) crochet hook.
  - Sport/DKSport weight is slightly thicker than fingering and slightly thinner than DK. DK stands for double knitting weight. Both sport and DK are great middle of the road weights, perfect for all projects from hats and mittens to baby items and even garments. Sport and DK is most commonly used with size US 5-7 (3.75-4.5 mm) knitting needles or a size 7 to I9 (4.5-5.5 mm) crochet hook.
  - Worsted/Aran/BulkyWorsted/Aran are the two thickest yarn bases that I currently carry. Both weights fall into the medium weight “4” category as given by the Yarn Council and are great for a multitude of warmer projects from hats to mittens to garments and blankets. Gauge would generally be 16-20 stitches over 4 inches with the use of US 7-9 needles or a crochet hook size I-K.
  - MinisMini skeins are perfect for colorwork, scrappy projects, and so much more. Minis are dyed on both 20 and 50 gram skeins.
  - ClearanceLooking for a deal? The yarn in this category is either a retired base or colorway. Still perfectly wonderful in its own way, but limited in quantity.
  - KitsLooking to make a fabulous winter hat with a beautiful faux fur pom pom? Or maybe a special project that has just the right amount of yarn needed for the project? If so, then these kits are for you!
  - PatternsNeed some inspiration for the beautiful yarn you have? Check out these patterns designed by Tonya.
  - Project Bags Beautiful handmade project bags, perfect for both your crafting projects and your essential notions and supplies.
    - Notion PouchesX-small project bags and notion pouches, great for all your knitting accessories or mini skein projects.
    - Medium ZipperA medium sized project bag, great for 2-3 skein projects.b
    - Tote BagsGreat for on the go, these bags not only have inside and outside pockets, but a drawstring top and nylon canvas handles. Great for all your projects, or simply an on the go bag.
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Strawberry Update for Saturday, June 13, 2026 – We do not have any strawberries available for purchase at the farm today, however we will be set up at the Rochester Farmers Market starting at 7:30 am this morning at the Olmsted County Fairgrounds. To make packaging and transport simpler, we will only have quarts with us. We will sell them $9 each or 4 quarts for $35. We no longer offer you pick strawberries.

Welcome!

Firefly Berries is a small, family-owned fruit farm located in Rochester, Minnesota. We specialize in concord grapes, blackberries, and naturally dyed yarn. Our farm is only open to the public during the months of September and October when we have fresh grapes available for customers to pick. From May through October you will find us most Saturdays from 7:30 am - 12 noon at the Rochester Farmers Market (located at the Olmsted County Fairgrounds) where we sell what is in season, be it strawberries, raspberries, blackberries, or concord grapes. And we always have naturally dyed yarn, raw honey, and jam with us as well! If you cannot make it to the farmers market, many of our products can be purchased online and shipped across the country. Click on the "shop" link at the top of this page to see our current offerings. If you don't see what you are looking for, feel free to give us a call at 507-252-1309 to inquire via phone.

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We no longer offer you-pick strawberries. However, for 2026 we will be offering already picked quarts and flats both at the Rochester Farmers Market and through online ordering with curbside pick up at the farm. Daily updates will be posted by 11 am each day.

About Us

We are a small, family owned and run farm. We purchased the farm in 2010 and although we occasionally hire additional workers, the vast majority of labor is done by us and our four children.

Weeding

We do not spray any chemicals anywhere on our farm. All weeding is done by hand except for the help of the hydroweeder.

Pruning

In the beginning just the adults did the pruning, but the kids watched and learned. Today the kids are ages 14-23 and everyone helps with pruning.

Harvesting Strawberries

Our strawberries are harvested by us and sold as prepicked quarts and flats for our customers to enjoy.

Harvesting Concord Grapes

Concord grapes are available both as you pick and already picked flats. Check back in early September for more information on picking times and days.

Thank You

from our family to yours

Whether you visit the farm for grape picking or purchase berries online or at the Farmers Market, we thank you for your patronage.

What's New in the Shop?

Berry Fun Yarns are dyed naturally with both plants we grow and dyestuff we purchase. We also offer handmade project bags and knitwear patterns designed by Tonya. Check out the latest additions to the online shop!

Fresh Produce

Get in Touch

Have a question?

Find us at the farm

5542 23rd Street NE

Rochester, MN 55906

Give us a ring

Tonya & Dean Sanner
507-252-1309

Strawberries

Berry Fun Yarns

Firefly Berries

Concord Grapes

Rochester Farmers Market