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  • BioMarker Weatherproof Plant Markers™
  • BioMarkers 2012 Green Thumb Award

BioMarker Plant Markers

U.S. shipping included on all products. (Broadfork, lower 48 only).
  • Product Description
  • Videos
  • specs & Features
  • customer testimonials
Free shipping to everywhere in the United States!

A plant marking system for the eco-friendly gardener! Recycled plastic markers with weatherproof labels! 

Noel Valdes tells The BioMarker story:

The original Biomarker was developed by MCG BioComposites LLC of Cedar Rapids, Iowa for a garden club in Des Moines. When MCG introduced the product to us we were intrigued, but we knew that a good marking system was needed to make the product more useful. After researching many labeling methods we came across a truly weatherproof label that was printable with a laser printer, or writable with a permanent marker. The labels are pressure sensitive, so they are easy to remove when they do start to wear out. They remain in place and readable through all kinds of weather, but when it's time to peel them off, they don't leave a residue. You just clean off the marker and apply another label.

I've trialed these markers and weatherproof labels for two full seasons in my garden. I really like them because they are easy to read, and the marking does not fade away. The labels stay on, and you can read them after exposure to sun, rain and snow. I also find the markers useful as plant stakes for propping up smaller plants, and I use them as surveying stakes when laying out plant and seed spacings. My son Geoff reports excellent results with BioMarkers from his garden in Austin, Texas. He's gone through multiple crop changes and the markers show no signs of wearing out. We are getting good feedback from gardeners around the country for our BioMarker plant marking system and we are happy to be able to offer them to our customers.

     - Noel

Size: 9.25" long, 1.875" x 2.875" flat marking surface

Tough BioMarkers will last many seasons! 

Three colors available:
Light Stone
Dark Green

Includes 1.625" x 2.5" weatherproof labels that you can print on a laser printer or write on with the included grease pencil. Easy peel-off, but long-lasting. Ideal for Laser Printing. Ink-jet printer not recommended. We provide you with a grease pencil (China marker) for weatherproof writing and enough labels for two seasons. Extra labels are available.


  • Made from Recycled Plastic with Corn Cob Fiber.
  • Size: 9.25" long, 1.875" x 2.875" flat marking surface
  • Tough BioMarkers will last many seasons.
  • Includes weatherproof labels for laser printing or handwriting.
  • Includes a grease pencil for weatherproof marking.
  • Made in USA!
  • Free Shipping!
  • We are pleased to announce that our BioMarkerTM plant markers won a 2012 Green Thumb award from the Direct Gardening Association. For more information, visit theGreen Thumb Awards page.

“ I grow a lot of onions and carrots, which need constant weeding when they are young. My CobraHead is always the tool of choice because its sharp edges shave down weeds so efficiently. My garden is big and busy, but I have never lost a CobraHead because the curved neck can be hung on anything – a post, fence or even a tomato cage. I have a long-handled CobraHead, too, which I use in the garden for weeding and making shallow furrows. Confession: It makes a darn fine scraper in the chicken house, too. “

Barbara Pleasant, award-winning book author and contributing editor to Mother Earth News

“ I’ve found CobraHead to be one of the most durable tools out in the landscape. Used for a wide range of purposes, our volunteers also find CobraHead to be the preferred tool of choice. The longevity of this well-constructed tool will be measured in decades and beyond which is not typical anymore! “

Mark Dwyer, Director of Horticulture at Rotary Botanical Gardens (Janesville, WI).

“ I love my CobraHead because it is easy as 1-2-3 to get in between flagstones in order to easily pop out weeds!. “

Shawna is an author, columnist, blogger, photographer, and spokesperson with green lifestyle living, organic gardening, and healthy cooking who campaigns for social good.